Ludwig Josef Johann Wittgenstein ( ; ; 26 April 1889 – 29 April 1951) was an Austrian philosopher who worked primarily in
logic
Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow from premises based on the structure o ...
, the
philosophy of mathematics
Philosophy of mathematics is the branch of philosophy that deals with the nature of mathematics and its relationship to other areas of philosophy, particularly epistemology and metaphysics. Central questions posed include whether or not mathem ...
, the
philosophy of mind
Philosophy of mind is a branch of philosophy that deals with the nature of the mind and its relation to the Body (biology), body and the Reality, external world.
The mind–body problem is a paradigmatic issue in philosophy of mind, although a ...
, and the
philosophy of language
Philosophy of language refers to the philosophical study of the nature of language. It investigates the relationship between language, language users, and the world. Investigations may include inquiry into the nature of Meaning (philosophy), me ...
.
From 1929 to 1947, Wittgenstein taught at the
University of Cambridge
The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, wo ...
.
Despite his position, only one book of his philosophy was published during his entire life: the 75-page ''Logisch-Philosophische Abhandlung'' (''Logical-Philosophical Treatise'', 1921), which appeared, together with an English translation, in 1922 under the Latin title ''
Tractatus Logico-Philosophicus
The ''Tractatus Logico-Philosophicus'' (widely abbreviated and Citation, cited as TLP) is the only book-length philosophical work by the Austrian philosopher Ludwig Wittgenstein that was published during his lifetime. The project had a broad goal ...
''. His only other published works were an article, "
Some Remarks on Logical Form" (1929); a book review; and a children's dictionary.
His voluminous manuscripts were edited and published posthumously. The first and best-known of this posthumous series is the 1953 book ''
Philosophical Investigations
''Philosophical Investigations'' () is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953.
''Philosophical Investigations'' is divided into two parts, consisting of what Wittgenstein calls, in the preface, ''Bemer ...
''. A 1999 survey among American university and college teachers ranked the ''Investigations'' as the most important book of
20th-century philosophy
Contemporary philosophy is the present period in the history of Western philosophy beginning at the early 20th century with the increasing professionalization of the discipline and the rise of Analytic philosophy, analytic and continental philosop ...
, standing out as "the one crossover masterpiece in twentieth-century philosophy, appealing across diverse specializations and philosophical orientations".
His philosophy is often divided into an early period, exemplified by the ''Tractatus'', and a later period, articulated primarily in the ''Philosophical Investigations''. The "early Wittgenstein" was concerned with the logical relationship between
proposition
A proposition is a statement that can be either true or false. It is a central concept in the philosophy of language, semantics, logic, and related fields. Propositions are the object s denoted by declarative sentences; for example, "The sky ...
s and the world, and he believed that by providing an account of the logic underlying this relationship, he had solved all philosophical problems. The "later Wittgenstein", however, rejected many of the assumptions of the ''Tractatus'', arguing that the
meaning of words is best understood as their use within a given
language game
A language game (also called a cant, secret language, ludling, or argot) is a system of manipulating spoken words to render them incomprehensible to an untrained listener. Language games are used primarily by groups attempting to conceal their ...
. More precisely, Wittgenstein wrote, "For a ''large'' class of cases of the employment of the word 'meaning'—though not for ''all''—this word can be explained in this way: the meaning of a word is its use in the language."
Born in Vienna into one of Europe's richest families, he inherited a fortune from his father in 1913. Before World War I, he "made a very generous financial bequest to a group of poets and artists chosen by Ludwig von Ficker, the editor of ''Der Brenner'', from artists in need. These included
eorgTrakl
Georg Trakl (; 3 February 1887 – 3 November 1914) was an Austria-Hungary, Austrian poet and the brother of the pianist Grete Trakl. He is considered one of the most important Austrian Expressionism, Expressionists. He is perhaps best known fo ...
as well as
Rainer Maria Rilke
René Karl Wilhelm Johann Josef Maria Rilke (4 December 1875 – 29 December 1926), known as Rainer Maria Rilke, was an Austrian poet and novelist. Acclaimed as an Idiosyncrasy, idiosyncratic and expressive poet, he is widely recognized as ...
and the architect
Adolf Loos
Adolf Franz Karl Viktor Maria Loos (; 10 December 1870 – 23 August 1933) was an Austrian and Czechoslovak architect, influential European theorist, and a polemicist of modern architecture. He was inspired by modernism and a widely-known c ...
", as well as the painter
Oskar Kokoschka
Oskar Kokoschka (1 March 1886 – 22 February 1980) was an Austrian artist, poet, playwright and teacher, best known for his intense expressionistic portraits and landscapes, as well as his theories on vision that influenced the Viennese Expre ...
. "In autumn 1916, as his sister reported, 'Ludwig made a donation of a million crowns
equivalent to about $2,869,000 in 2016 dollars"for the construction of a 30cm mortar.'" Later, in a period of severe personal depression after World War I, he gave away his remaining fortune to his brothers and sisters. Three of his four older brothers died by separate acts of suicide. Wittgenstein left academia several times: serving as an officer on the front line during World War I, where he was
decorated a number of times for his courage; teaching in schools in remote Austrian villages, where he encountered controversy for using sometimes violent corporal punishment on both girls and boys (see, for example, the
Haidbauer incident), especially during mathematics classes; working during World War II as a hospital porter in London; and working as a hospital laboratory technician at the
Royal Victoria Infirmary
The Royal Victoria Infirmary (RVI) is a 673-bed tertiary referral hospital and research centre in Newcastle upon Tyne, England, with strong links to Newcastle University.
The hospital is part of the Newcastle upon Tyne Hospitals NHS Foundation T ...
in
Newcastle upon Tyne
Newcastle upon Tyne, or simply Newcastle ( , Received Pronunciation, RP: ), is a City status in the United Kingdom, cathedral city and metropolitan borough in Tyne and Wear, England. It is England's northernmost metropolitan borough, located o ...
.
Background
The Wittgensteins

According to a family tree prepared in Jerusalem after World War II, Wittgenstein's paternal great-great-grandfather was Moses Meier, an
Ashkenazi Jewish
Ashkenazi Jews ( ; also known as Ashkenazic Jews or Ashkenazim) form a distinct subgroup of the Jewish diaspora, that Ethnogenesis, emerged in the Holy Roman Empire around the end of the first millennium Common era, CE. They traditionally spe ...
land agent who lived with his wife, Brendel Simon, in
Bad Laasphe
Bad Laasphe () is a town in North Rhine-Westphalia, Germany, in the Siegen-Wittgenstein district.
Geography
Location
The town of Bad Laasphe lies in the upper Lahn Valley, near the stately home of Wittgenstein Castle (de) (nowadays a boarding ...
in the
Principality of Wittgenstein,
Westphalia
Westphalia (; ; ) is a region of northwestern Germany and one of the three historic parts of the state of North Rhine-Westphalia. It has an area of and 7.9 million inhabitants.
The territory of the region is almost identical with the h ...
. In July 1808, Napoleon issued a decree that everyone, including Jews, must adopt an inheritable family surname, so Meier's son, also Moses, took the name of his employers, the
Sayn-Wittgenstein
Sayn-Wittgenstein was a county of medieval Germany, located in the Sauerland of eastern North Rhine-Westphalia.
History
Sayn-Wittgenstein was created when Count Salentin of Sayn-Homburg (1314-1392), a member of the House of Sponheim, married ...
s, and became Moses Meier Wittgenstein. His son, Hermann Christian Wittgenstein — who took the middle name "Christian" to distance himself from his Jewish background — married Fanny Figdor, also Jewish, who converted to Protestantism just before they married, and the couple founded a successful business trading in wool in
Leipzig
Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ...
. Ludwig's grandmother Fanny was a first cousin of the violinist
Joseph Joachim
Joseph Joachim (28 June 1831 – 15 August 1907) was a Hungarian Violin, violinist, Conducting, conductor, composer and teacher who made an international career, based in Hanover and Berlin. A close collaborator of Johannes Brahms, he is widely ...
.
They had 11 children – among them Wittgenstein's father.
Karl Otto Clemens Wittgenstein (1847–1913) became an industrial tycoon, and by the late 1880s was one of the richest men in Europe, with an effective monopoly on Austria's steel cartel.
Thanks to Karl, the Wittgensteins became the second wealthiest family in the
Austro-Hungarian Empire
Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe between 1867 and 1918. A military and diplomatic alliance, it consist ...
, only the
Rothschilds
The Rothschild family ( , ) is a wealthy Ashkenazi Jews, Ashkenazi Jewish noble banking family originally from Frankfurt. The family's documented history starts in 16th-century Frankfurt; its name is derived from the family house, Rothschild, ...
being wealthier. Karl Wittgenstein was viewed as the Austrian equivalent of
Andrew Carnegie
Andrew Carnegie ( , ; November 25, 1835August 11, 1919) was a Scottish-American industrialist and philanthropist. Carnegie led the expansion of the History of the iron and steel industry in the United States, American steel industry in the late ...
, with whom he was friends, and was one of the wealthiest men in the world by the 1890s.
As a result of his decision in 1898 to invest substantially in the Netherlands and in Switzerland as well as overseas, particularly in the US, the family was to an extent shielded from the
hyperinflation that hit Austria in 1922. However, their wealth diminished due to post-1918 hyperinflation and subsequently during the
Great Depression
The Great Depression was a severe global economic downturn from 1929 to 1939. The period was characterized by high rates of unemployment and poverty, drastic reductions in industrial production and international trade, and widespread bank and ...
, although even as late as 1938 they owned 13 mansions in Vienna alone.
Early life

Wittgenstein was ethnically
Jewish
Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...
.
His mother was Leopoldine Maria Josefa Kalmus, known among friends as "Poldi". Her father was a
Bohemian
Bohemian or Bohemians may refer to:
*Anything of or relating to Bohemia
Culture and arts
* Bohemianism, an unconventional lifestyle, originally practised by 19th–20th century European and American artists and writers.
* Bohemian style, a ...
Jew, and her mother was an Austrian-
Slovene Catholic—she was Wittgenstein's only non-Jewish grandparent. Poldi was an aunt of the Nobel Prize laureate
Friedrich Hayek
Friedrich August von Hayek (8 May 1899 – 23 March 1992) was an Austrian-born British academic and philosopher. He is known for his contributions to political economy, political philosophy and intellectual history. Hayek shared the 1974 Nobe ...
on his maternal side. Wittgenstein was born at 8:30 on 26 April 1889 in the "Villa Wittgenstein" at what is today Neuwaldegger Straße 38 in the suburban parish next to Vienna.

Karl and Poldi had nine children in all—four girls: Hermine,
Margaret
Margaret is a feminine given name, which means "pearl". It is of Latin origin, via Ancient Greek and ultimately from Iranian languages, Old Iranian. It has been an English language, English name since the 11th century, and remained popular thro ...
(Gretl), Helene, and a fourth daughter Dora who died as a baby; and five boys: Johannes (Hans), Kurt, Rudolf (Rudi),
Paul
Paul may refer to:
People
* Paul (given name), a given name, including a list of people
* Paul (surname), a list of people
* Paul the Apostle, an apostle who wrote many of the books of the New Testament
* Ray Hildebrand, half of the singing duo ...
—who became a concert pianist despite losing an arm in World War I—and Ludwig, who was the youngest of the family.

The children were baptized as Catholics, received formal Catholic instruction, and were raised in an exceptionally intense environment.
The family was at the centre of Vienna's cultural life;
Bruno Walter
Bruno Walter (born Bruno Schlesinger, September 15, 1876February 17, 1962) was a Germany, German-born Conducting, conductor, pianist, and composer. Born in Berlin, he escaped Nazi Germany in 1933, was naturalised as a French people, French cit ...
described the life at the Wittgensteins' palace as an "all-pervading atmosphere of humanity and culture". Karl was a leading patron of the arts, commissioning works by
Auguste Rodin
François Auguste René Rodin (; ; 12 November 184017 November 1917) was a French sculptor generally considered the founder of modern sculpture. He was schooled traditionally and took a craftsman-like approach to his work. Rodin possessed a u ...
and financing the city's exhibition hall and art gallery, the
Secession Building
The Secession Building () is a contemporary art exhibition hall in Vienna, Austria. It was completed in 1898 by Joseph Maria Olbrich as an architectural manifesto for the Vienna Secession, a group of rebel artists that seceded from the long-estab ...
.
Gustav Klimt
Gustav Klimt (14 July 1862 – 6 February 1918) was an Austrian symbolist painter and a founding member of the Vienna Secession movement. His work helped define the Art Nouveau style in Europe. Klimt is known for his paintings, murals, sket ...
painted a portrait of Wittgenstein's sister Margaret for her wedding, and
Johannes Brahms
Johannes Brahms (; ; 7 May 1833 – 3 April 1897) was a German composer, virtuoso pianist, and conductor of the mid-Romantic period (music), Romantic period. His music is noted for its rhythmic vitality and freer treatment of dissonance, oft ...
and
Gustav Mahler
Gustav Mahler (; 7 July 1860 – 18 May 1911) was an Austro-Bohemian Romantic music, Romantic composer, and one of the leading conductors of his generation. As a composer he acted as a bridge between the 19th-century Austro-German tradition and ...
gave regular concerts in the family's numerous music rooms.
Wittgenstein, who valued precision and discipline, never considered contemporary classical music acceptable. He said to his friend Drury in 1930: Ludwig Wittgenstein himself had
absolute pitch
Absolute pitch (AP), often called perfect pitch, is the ability to identify or re-create a given musical note without the benefit of a reference tone. AP may be demonstrated using linguistic labelling ("naming" a note), associating mental image ...
, and his devotion to music remained vitally important to him throughout his life; he made frequent use of musical examples and metaphors in his philosophical writings, and he was unusually adept at whistling lengthy and detailed musical passages. He also learnt to play the clarinet in his 30s. A fragment of music (three bars), composed by Wittgenstein, was discovered in one of his 1931 notebooks, by
Michael Nedo
Michael Nedo (1940-) is the director of the Wittgenstein Archive in Cambridge
Cambridge ( ) is a List of cities in the United Kingdom, city and non-metropolitan district in the county of Cambridgeshire, England. It is the county town of Cambri ...
, director of the Wittgenstein Institute in Cambridge.
Family temperament and the brothers' suicides
Ray Monk
Ray Monk (born 15 February 1957) is a British biographer who is renowned for his biographies of Ludwig Wittgenstein, Bertrand Russell, and J. Robert Oppenheimer. He is emeritus professor of philosophy at the University of Southampton, where he ...
writes that Karl's aim was to turn his sons into captains of industry; they were not sent to school lest they acquire bad habits but were educated at home to prepare them for work in Karl's industrial empire. Three of the five brothers later committed suicide.
Psychiatrist
Michael Fitzgerald argues that Karl was a harsh perfectionist who lacked empathy, and that Wittgenstein's mother was anxious and insecure, unable to stand up to her husband.
Johannes Brahms said of the family, whom he visited regularly: The family appeared to have a strong streak of depression running through it.
Anthony Gottlieb
Anthony John Gottlieb (born 1956) is a British writer, author, historian of ideas, and former Executive Editor of The ''Economist''. He is the author of two major works on the history of philosophy, '' The Dream of Reason'' and '' The Dream of Enl ...
tells a story about Paul practising on one of the pianos in the Wittgensteins' main family mansion, when he suddenly shouted at Ludwig in the next room:
The family palace housed seven grand pianos and each of the siblings pursued music "with an enthusiasm that, at times, bordered on the pathological". The eldest brother, Hans, was hailed as a musical prodigy. At the age of four, writes
Alexander Waugh
Alexander Evelyn Michael Waugh (30 December 1963 – 22 July 2024) was an English writer, critic, and journalist. Among other books, he wrote ''Fathers and Sons: The Autobiography of a Family'' (2004), about five generations of his own family, ...
, Hans could identify the
Doppler effect
The Doppler effect (also Doppler shift) is the change in the frequency of a wave in relation to an observer who is moving relative to the source of the wave. The ''Doppler effect'' is named after the physicist Christian Doppler, who described ...
in a passing siren as a quarter-tone drop in pitch, and at five started crying "Wrong! Wrong!" when two brass bands in a carnival played the same tune in different
keys
Key, Keys, The Key or The Keys may refer to:
Common uses
* Key (cryptography), a piece of information needed to encode or decode a message
* Key (instrument), a component of a musical instrument
* Key (lock), a device used to operate a lock
* ...
. But he died in mysterious circumstances in May 1902, when he ran away to the US and disappeared from a boat in
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Ea ...
, most likely having committed suicide.
Two years later, aged 22 and studying chemistry at the
Berlin Academy, the third eldest brother, Rudi, committed suicide in a Berlin bar. He had asked the pianist to play
Thomas Koschat's "''Verlassen, verlassen, verlassen bin ich''" ("Forsaken, forsaken, forsaken am I"), before mixing himself a drink of milk and
potassium cyanide
Potassium cyanide is a compound with the formula KCN. It is a colorless salt, similar in appearance to sugar, that is highly soluble in water. Most KCN is used in gold mining, organic synthesis, and electroplating. Smaller applications include ...
. He had left several suicide notes, one to his parents that said he was grieving over the death of a friend, and another that referred to his "perverted disposition". It was reported at the time that he had sought advice from the
Scientific-Humanitarian Committee
The Scientific-Humanitarian Committee (, WhK) was founded by Magnus Hirschfeld in Berlin in May 1897, to campaign for social recognition of lesbian, gay, bisexual and transgender people, and against their legal persecution. It was the first L ...
, an organization that was campaigning against
Paragraph 175
Paragraph 175, known formally a§175 StGBand also referred to as Section 175 in English language, English, was a provision of the Strafgesetzbuch, German Criminal Code from 15 May 1871 to 10 March 1994. It Criminalization of homosexuality, mad ...
of the German Criminal Code, which prohibited homosexual sex. His father forbade the family from ever mentioning his name again.
(Ludwig himself was a closeted homosexual, who separated sexual intercourse from love, despising all forms of the former.)
The second eldest brother, Kurt, an officer and company director, shot himself on 27 October 1918, just before the end of World War I, when the Austrian troops he was commanding refused to obey his orders and deserted ''en masse''. According to Gottlieb, Hermine had said Kurt seemed to carry "the germ of disgust for life within himself". Later, Ludwig wrote:
1903–1906: Realschule in Linz
Realschule in Linz
Wittgenstein was taught by private tutors at home until he was 14 years old. Subsequently, for three years, he attended a school. After the deaths of Hans and Rudi, Karl relented and allowed Paul and Ludwig to be sent to school. Waugh writes that it was too late for Wittgenstein to pass his exams for the more academic
''Gymnasium'' in Wiener Neustadt; having had no formal schooling, he failed his entrance exam and only barely managed after extra tutoring to pass the exam for the more technically oriented
k.u.k.
The phrase Imperial and Royal (, ) refers to the court/government of the Habsburgs in a broader historical perspective. Some modern authors restrict its use to the Dual Monarchy of Austria-Hungary from 1867 to 1918.
During that period, it ind ...
''
Realschule
Real school (, ) is a type of secondary school in Germany, Switzerland and Liechtenstein. It has also existed in Croatia (''realna gimnazija''), the Austrian Empire, the German Empire, Denmark and Norway (''realskole''), Sweden (''realskola''), F ...
'' in
Linz
Linz (Pronunciation: , ; ) is the capital of Upper Austria and List of cities and towns in Austria, third-largest city in Austria. Located on the river Danube, the city is in the far north of Austria, south of the border with the Czech Repub ...
, a small state school with 300 pupils. In 1903, when he was 14, he began his three years of formal schooling there, lodging nearby during the term with the family of Josef Strigl, a teacher at the local gymnasium, the family giving him the nickname Luki.
On starting at the Realschule, Wittgenstein had been moved forward a year. Historian
Brigitte Hamann
Brigitte Hamann (; 26 July 1940 – 4 October 2016) was a German-Austrian author and historian based in Vienna.
Biography
Born in Essen, Germany, Hamann studied history in Münster and Vienna. She worked as a journalist in Essen for some time. ...
writes that he stood out from the other boys: he spoke an unusually pure form of
High German
The High German languages (, i.e. ''High German dialects''), or simply High German ( ) – not to be confused with Standard High German which is commonly also called "High German" – comprise the varieties of German spoken south of the Ben ...
with a stutter, dressed elegantly, and was sensitive and unsociable. Monk writes that the other boys made fun of him, singing after him: "Wittgenstein wandelt wehmütig widriger Winde wegen Wienwärts" ("Wittgenstein wanders wistfully Vienna-wards (in) worsening winds"). In his leaving certificate, he received a top mark (5) in religious studies; a 2 for conduct and English, 3 for French, geography, history, mathematics and physics, and 4 for German, chemistry, geometry and freehand drawing. He had particular difficulty with spelling and failed his written German exam because of it. He wrote in 1931:
Faith
Wittgenstein was baptized as an infant by a Catholic priest and received formal instruction in Catholic doctrine as a child, as was common at the time.
In an interview, his sister Gretl Stonborough-Wittgenstein says that their grandfather's "strong, severe, partly ascetic
Christianity
Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...
" was a strong influence on all the Wittgenstein children. While he was at the ''Realschule'', he decided he lacked religious faith and began reading
Arthur Schopenhauer
Arthur Schopenhauer ( ; ; 22 February 1788 – 21 September 1860) was a German philosopher. He is known for his 1818 work ''The World as Will and Representation'' (expanded in 1844), which characterizes the Phenomenon, phenomenal world as ...
per Gretl's recommendation. He nevertheless believed in the importance of the idea of
confession
A confession is a statement – made by a person or by a group of people – acknowledging some personal fact that the person (or the group) would ostensibly prefer to keep hidden. The term presumes that the speaker is providing information that ...
. He wrote in his diaries about having made a major confession to his oldest sister, Hermine, while he was at the ''Realschule''; Monk speculates that it may have been about his loss of faith. He also discussed it with Gretl, his other sister, who directed him to Schopenhauer's ''
The World as Will and Representation
''The World as Will and Representation'' (''WWR''; , ''WWV''), sometimes translated as ''The World as Will and Idea'', is the central work of the German philosopher Arthur Schopenhauer. The first edition was published in late 1818, with the date ...
''. As a teenager, Wittgenstein adopted Schopenhauer's
epistemological idealism Epistemological idealism is a subjectivist position in epistemology that holds that what one knows about an object exists only in one's mind. It is opposed to epistemological realism.
Overview
Epistemological idealism suggests that everything we '' ...
. However, after he studied the philosophy of mathematics, he abandoned epistemological idealism for
Gottlob Frege
Friedrich Ludwig Gottlob Frege (; ; 8 November 1848 – 26 July 1925) was a German philosopher, logician, and mathematician. He was a mathematics professor at the University of Jena, and is understood by many to be the father of analytic philos ...
's
conceptual realism. In later years, Wittgenstein was highly dismissive of Schopenhauer, describing him as an ultimately "shallow" thinker: Wittgenstein's relationship with Christianity and with religion in general, for which he always professed a sincere and devoted sympathy, changed over time, much like his philosophical ideas. In 1912, Wittgenstein wrote to Russell saying that
Mozart
Wolfgang Amadeus Mozart (27 January 1756 – 5 December 1791) was a prolific and influential composer of the Classical period (music), Classical period. Despite his short life, his rapid pace of composition and proficiency from an early age ...
and
Beethoven
Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. He is one of the most revered figures in the history of Western music; his works rank among the most performed of the classical music repertoire ...
were the actual sons of God. However, Wittgenstein resisted formal religion, saying it was hard for him to "bend the knee", though his grandfather's beliefs continued to influence Wittgenstein – as he said, "I cannot help seeing every problem from a religious point of view." Wittgenstein referred to
Augustine of Hippo
Augustine of Hippo ( , ; ; 13 November 354 – 28 August 430) was a theologian and philosopher of Berber origin and the bishop of Hippo Regius in Numidia, Roman North Africa. His writings deeply influenced the development of Western philosop ...
in his ''Philosophical Investigations''. Philosophically, Wittgenstein's thought shows alignment with religious discourse. For example, he would become one of the century's fiercest critics of
scientism
Scientism is the belief that science and the scientific method are the best or only way to render truth about the world and reality.
While the term was defined originally to mean "methods and attitudes typical of or attributed to natural scientis ...
.
Wittgenstein's religious belief emerged during his service for the Austrian army in World War I, and he was a devoted reader of Dostoevsky's and Tolstoy's religious writings. He viewed his wartime experiences as a trial in which he strove to conform to the will of God, and in a journal entry from 29 April 1915, he writes: Around this time, Wittgenstein wrote that "Christianity is indeed the only sure way to happiness", but he rejected the idea that religious belief was merely thinking that a certain doctrine was true. From this time on, Wittgenstein viewed religious faith as a way of living and opposed rational argumentation or proofs for God.
With age, a deepening personal spirituality led to several elucidations and clarifications, as he untangled language problems in religionattacking, for example, the temptation to think of God's existence as a matter of scientific evidence. In 1947, finding it more difficult to work, he wrote:In ''Culture and Value'', Wittgenstein writes:His close friend Norman Malcolm wrote:Toward the end, Wittgenstein wrote:
Influence of Otto Weininger

While a student at the ''Realschule'', Wittgenstein was influenced by Austrian philosopher
Otto Weininger
Otto Weininger (; 3 April 1880 – 4 October 1903) was an Austrian philosopher who in 1903 published the book ''Geschlecht und Charakter'' (''Sex and Character''), which gained popularity after his suicide at the age of 23. Weininger had a stron ...
's 1903 book ''Geschlecht und Charakter'' (''
Sex and Character''). Weininger (1880–1903), who was Jewish, argued that the concepts of male and female exist only as
Platonic forms
The Theory of Forms or Theory of Ideas, also known as Platonic idealism or Platonic realism, is a philosophical theory credited to the Classical Greek philosopher Plato.
A major concept in metaphysics, the theory suggests that the physical wo ...
, and that Jews tend to embody the Platonic femininity. Whereas men are basically rational, women operate only at the level of their emotions and sexual organs. Jews, Weininger argued, are similar, saturated with femininity, with no sense of right and wrong, and no soul. Weininger argues that man must choose between his masculine and feminine sides, consciousness and unconsciousness, platonic love and sexuality. Love and sexual desire stand in contradiction, and love between a woman and a man is therefore doomed to misery or immorality. The only life worth living is the spiritual one – to live as a woman or a Jew means one has no right to live at all; the choice is genius or death. Weininger committed suicide, shooting himself in 1903, shortly after publishing the book. Wittgenstein, then 14, attended Weininger's funeral. Many years later, as a professor at the
University of Cambridge
The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, wo ...
, Wittgenstein distributed copies of Weininger's book to his bemused academic colleagues. He said that Weininger's arguments were wrong, but that it was the way they were wrong that was interesting. In a letter dated 23 August 1931, Wittgenstein wrote the following to
G. E. Moore
George Edward Moore (4 November 1873 – 24 October 1958) was an English philosopher, who with Bertrand Russell, Ludwig Wittgenstein and earlier Gottlob Frege was among the initiators of analytic philosophy. He and Russell began de-emphasizing ...
:In an unusual move, Wittgenstein took out a copy of Weininger's work on 1 June 1931 from the Special Order Books in the university library. He met Moore on 2 June, when he probably gave this copy to Moore.
Jewish background and Hitler
Despite their and their forebears' Christianization, the Wittgensteins considered themselves Jewish. This was evident during the Nazi era, when Ludwig's sister was assured by an official that they would not be considered as Jews under the racial laws. Indignant at the state's attempt to dictate her identity, she demanded papers certifying their Jewish lineage.
In his own writings, Wittgenstein frequently referred to himself as Jewish, often in a self-deprecating manner. For instance, while criticizing himself for being a "reproductive" rather than a "productive" thinker, he attributed this to his Jewish sense of identity. He wrote: 'The saint is the only Jewish "genius". Even the greatest Jewish thinker is no more than talented. (Myself for instance).'
There is much discussion around the extent to which Wittgenstein and his siblings, who were of three-quarter-Jewish descent, saw themselves as Jews. The issue has arisen in particular regarding Wittgenstein's schooldays, because
Adolf Hitler
Adolf Hitler (20 April 1889 – 30 April 1945) was an Austrian-born German politician who was the dictator of Nazi Germany from 1933 until Death of Adolf Hitler, his suicide in 1945. Adolf Hitler's rise to power, He rose to power as the lea ...
was, for a while, at the same school at the same time. Laurence Goldstein argues that it is "overwhelmingly probable" that the boys met each other and that Hitler would have disliked Wittgenstein, a "stammering, precocious, precious, aristocratic upstart ..."; Strathern flatly states they never met. Other commentators have dismissed as irresponsible and uninformed any suggestion that Wittgenstein's wealth and unusual personality might have fed Hitler's antisemitism, in part because there is no indication that Hitler would have seen Wittgenstein as Jewish.
Wittgenstein and Hitler were born just six days apart, though Hitler had to re-sit his mathematics exam before being allowed into a higher class, while Wittgenstein was moved forward by one, so they ended up two grades apart at the ''Realschule''. Monk estimates that they were both at the school during the 1904–1905 school year, but says there is no evidence they had anything to do with each other. Several commentators have argued that a school photograph of Hitler may show Wittgenstein in the lower left corner,

While Wittgenstein would later claim that "
thoughts are 100% Hebraic", as
Hans Sluga
Hans D. Sluga (; born 24 April 1937) is a German philosopher who spent most of his career as professor of philosophy at the University of California, Berkeley. Sluga teaches and writes on topics in the history of analytic philosophy, the history ...
has argued, if so, By Hebraic, he meant to include the Christian tradition, in contradistinction to the Greek tradition, holding that good and evil could not be reconciled.
1906–1913: University
Engineering at Berlin and Manchester
He began his studies in mechanical engineering at the
Technische Hochschule Berlin in
Charlottenburg
Charlottenburg () is a Boroughs and localities of Berlin, locality of Berlin within the borough of Charlottenburg-Wilmersdorf. Established as a German town law, town in 1705 and named after Sophia Charlotte of Hanover, Queen consort of Kingdom ...
, Berlin, on 23 October 1906, lodging with the family of Professor Jolles. He attended for three semesters, and was awarded a
diploma
A diploma is a document awarded by an educational institution (such as a college or university) testifying the recipient has graduated by successfully completing their courses of studies. Historically, it has also referred to a charter or offi ...
(''Abgangzeugnis'') on 5 May 1908.
During his time at the Institute, Wittgenstein developed an interest in
aeronautics
Aeronautics is the science or art involved with the study, design process, design, and manufacturing of air flight-capable machines, and the techniques of operating aircraft and rockets within the atmosphere.
While the term originally referred ...
. He arrived at the
Victoria University of Manchester
The Victoria University of Manchester, usually referred to as simply the University of Manchester, was a university in Manchester, England. It was founded in 1851 as Owens College. In 1880, the college joined the federal Victoria University. A ...
in the spring of 1908 to study for a doctorate, full of plans for aeronautical projects, including designing and flying his own plane. He conducted research into the behaviour of kites in the upper atmosphere, experimenting at a meteorological observation site near
Glossop
Glossop is a market town in the borough of High Peak (borough), High Peak, Derbyshire, England, east of Manchester, north-west of Sheffield and north of Matlock, Derbyshire, Matlock. Near Derbyshire's borders with Cheshire, Greater Mancheste ...
in
Derbyshire
Derbyshire ( ) is a ceremonial county in the East Midlands of England. It borders Greater Manchester, West Yorkshire, and South Yorkshire to the north, Nottinghamshire to the east, Leicestershire to the south-east, Staffordshire to the south a ...
. Specifically, the
Royal Meteorological Society
The Royal Meteorological Society is an organization that promotes academic and public engagement in weather and climate science. Fellows of the Society must possess relevant qualifications, but Members can be lay enthusiasts. It publishes vari ...
researched and investigated the ionization of the upper atmosphere, by suspending instruments on balloons or kites. At Glossop, Wittgenstein worked under Professor of Physics Sir
Arthur Schuster
Sir Franz Arthur Friedrich Schuster (12 September 1851 – 14 October 1934) was a German-born British physicist known for his work in spectroscopy, electrochemistry, optics, X-radiography and the application of harmonic analysis to physics. S ...
.
He also worked on the design of a propeller with small jet (
Tip jet
A tip jet is a jet nozzle at the tip of some helicopter rotor blades, used to spin the rotor, much like a Catherine wheel firework. Tip jets replace the normal shaft drive and have the advantage of placing no torque on the airframe, thus not re ...
) engines on the end of its blades, something he patented in 1911, and that earned him a research studentship from the university in the autumn of 1908. At the time, contemporary propeller designs were not advanced enough to actually put Wittgenstein's ideas into practice, and it would be years before a blade design that could support Wittgenstein's innovative design was created. Wittgenstein's design required air and gas to be forced along the propeller arms to combustion chambers on the end of each blade, where they were then compressed by the centrifugal force exerted by the revolving arms and ignited. Propellers of the time were typically wood, whereas modern blades are made from pressed steel laminates as separate halves, which are then welded together. This gives the blade a hollow interior and thereby creates an ideal pathway for the air and gas.

Work on the jet-powered propeller proved frustrating for Wittgenstein, who had very little experience working with machinery. Jim Bamber, a British engineer who was his friend and classmate at the time, reported that According to William Eccles, another friend from that period, Wittgenstein then turned to more theoretical work, focusing on the design of the propeller – a problem that required relatively sophisticated mathematics.
It was at this time that he became interested in the
foundations of mathematics
Foundations of mathematics are the mathematical logic, logical and mathematics, mathematical framework that allows the development of mathematics without generating consistency, self-contradictory theories, and to have reliable concepts of theo ...
, particularly after reading
Bertrand Russell
Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British philosopher, logician, mathematician, and public intellectual. He had influence on mathematics, logic, set theory, and various areas of analytic ...
's ''
The Principles of Mathematics
''The Principles of Mathematics'' (''PoM'') is a 1903 book by Bertrand Russell, in which the author presented Russell's paradox, his famous paradox and argued his thesis that mathematics and logic are identical.
The book presents a view of ...
'' (1903), and
Gottlob Frege
Friedrich Ludwig Gottlob Frege (; ; 8 November 1848 – 26 July 1925) was a German philosopher, logician, and mathematician. He was a mathematics professor at the University of Jena, and is understood by many to be the father of analytic philos ...
's ''
The Foundations of Arithmetic
''The Foundations of Arithmetic'' () is a book by Gottlob Frege, published in 1884, which investigates the philosophical foundations of arithmetic. Frege refutes other idealist and materialist theories of number and develops his own platonist th ...
'', vol. 1 (1893) and vol. 2 (1903). Wittgenstein's sister Hermine said he became obsessed with mathematics as a result, and was anyway losing interest in aeronautics. He decided instead that he needed to study logic and the foundations of mathematics, describing himself as in a "constant, indescribable, almost pathological state of agitation". In the summer of 1911 he visited Frege at the
University of Jena
The University of Jena, officially the Friedrich Schiller University Jena (, abbreviated FSU, shortened form ''Uni Jena''), is a public research university located in Jena, Thuringia, Germany.
The university was established in 1558 and is cou ...
to show him some philosophy of mathematics and logic he had written, and to ask whether it was worth pursuing. He wrote:
Arrival at Cambridge

Wittgenstein wanted to study with Frege, but Frege suggested he attend the
University of Cambridge
The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, wo ...
to study under Russell, so on 18 October 1911 Wittgenstein arrived unannounced at Russell's rooms in
Trinity College Trinity College may refer to:
Australia
* Trinity Anglican College, an Anglican coeducational primary and secondary school in , New South Wales
* Trinity Catholic College, Auburn, a coeducational school in the inner-western suburbs of Sydney, New ...
.
Russell was having tea with
C. K. Ogden, when, according to Russell, He was soon not only attending Russell's lectures but dominating them. The lectures were poorly attended and Russell often found himself lecturing only to
C. D. Broad
Charlie Dunbar Broad (30 December 1887 – 11 March 1971), usually cited as C. D. Broad, was an English philosopher who worked on epistemology, history of philosophy, philosophy of science, and ethics, as well as the philosophical aspects ...
,
E. H. Neville
Eric Harold Neville, known as E. H. Neville (1 January 1889 London, England – 22 August 1961 Reading, Berkshire, England) was an English mathematician. A heavily fictionalised portrayal of his life is rendered in the 2007 novel '' The Indi ...
, and H. T. J. Norton. Wittgenstein started following him after lectures back to his rooms to discuss more philosophy, until it was time for the evening meal in
Hall
In architecture, a hall is a relatively large space enclosed by a roof and walls. In the Iron Age and the Early Middle Ages in northern Europe, a mead hall was where a lord and his retainers ate and also slept. Later in the Middle Ages, the gre ...
. Russell grew irritated; he wrote to his lover
Lady Ottoline Morrell
Lady Ottoline Violet Anne Morrell (née Cavendish-Bentinck; 16 June 1873 – 21 April 1938) was an English Aristocracy (class), aristocrat and society hostess. Her patronage was influential in artistic and intellectual circles, where she befri ...
: "My German friend threatens to be an infliction."
Russell soon came to believe that Wittgenstein was a genius, especially after he had examined Wittgenstein's written work. He wrote in November 1911 that he had at first thought Wittgenstein might be a crank, but soon decided he was a genius: Three months after Wittgenstein's arrival Russell told Morrell: Wittgenstein later told David Pinsent that Russell's encouragement had proven his salvation, and had ended nine years of loneliness and suffering, during which he had continually thought of suicide. In encouraging him to pursue philosophy and in justifying his inclination to abandon engineering, Russell had, quite literally, saved Wittgenstein's life. The role-reversal between Bertrand Russell and Wittgenstein was soon such that Russell wrote in 1916 after Wittgenstein had criticized Russell's own work:
Cambridge Moral Sciences Club and Apostles

In 1912 Wittgenstein joined the
Cambridge University Moral Sciences Club
The Cambridge University Moral Sciences Club, founded in October 1878, is a philosophy discussion group that meets weekly at the University of Cambridge during term time. Speakers are invited to present a paper with a strict upper time limit of 4 ...
, an influential discussion group for philosophy dons and students, delivering his first paper there on 29 November that year, a four-minute talk defining philosophy as "all those primitive propositions which are assumed as true without proof by the various sciences".He dominated the society and for a time would stop attending in the early 1930s after complaints that he gave no one else a chance to speak.
The club became infamous within popular philosophy because of a meeting on 25 October 1946 at
Richard Braithwaite
Richard Bevan Braithwaite (15 January 1900 – 21 April 1990) was an English philosopher who specialized in the philosophy of science, ethics, and the philosophy of religion.
Life
Braithwaite was born in Banbury, Oxfordshire, son of the ...
's rooms in
King's College, Cambridge
King's College, formally The King's College of Our Lady and Saint Nicholas in Cambridge, is a List of colleges of the University of Cambridge, constituent college of the University of Cambridge. The college lies beside the River Cam and faces ...
, where
Karl Popper
Sir Karl Raimund Popper (28 July 1902 – 17 September 1994) was an Austrian–British philosopher, academic and social commentator. One of the 20th century's most influential philosophers of science, Popper is known for his rejection of the ...
, another Viennese philosopher, had been invited as the guest speaker. Popper's paper was "Are there philosophical problems?", in which he struck up a position against Wittgenstein's, contending that problems in philosophy are real, not just linguistic puzzles as Wittgenstein argued. Accounts vary as to what happened next, but Wittgenstein apparently started waving a hot poker, demanding that Popper give him an example of a moral rule. Popper offered one – "Not to threaten visiting speakers with pokers" — at which point Russell told Wittgenstein he had misunderstood and Wittgenstein left. Popper maintained that Wittgenstein "stormed out", but it had become accepted practice for him to leave early (because of his aforementioned ability to dominate discussion). It was the only time the philosophers, three of the most eminent in the 20th CE, were ever in the same room together. The minutes record that the meeting was "charged to an unusual degree with a spirit of controversy".
Cambridge Apostles
The economist
John Maynard Keynes
John Maynard Keynes, 1st Baron Keynes ( ; 5 June 1883 – 21 April 1946), was an English economist and philosopher whose ideas fundamentally changed the theory and practice of macroeconomics and the economic policies of governments. Originall ...
also invited him to join the
Cambridge Apostles
The Cambridge Apostles (also known as the Conversazione Society) is an intellectual society at the University of Cambridge founded in 1820 by George Tomlinson, a Cambridge student who became the first Bishop of Gibraltar.
History
Student ...
, an elite secret society formed in 1820, which both Bertrand Russell and
G. E. Moore
George Edward Moore (4 November 1873 – 24 October 1958) was an English philosopher, who with Bertrand Russell, Ludwig Wittgenstein and earlier Gottlob Frege was among the initiators of analytic philosophy. He and Russell began de-emphasizing ...
had joined as students, but Wittgenstein did not greatly enjoy it and attended only infrequently. Russell had been worried that Wittgenstein would not appreciate the group's raucous style of intellectual debate, its precious sense of humour, and the fact that the members were often in love with one another. He was admitted in 1912 but resigned almost immediately because he could not tolerate the style of discussion. Nevertheless, the Cambridge Apostles allowed Wittgenstein to participate in meetings again in the 1920s when he returned to Cambridge. Reportedly, Wittgenstein also had trouble tolerating the discussions in the Cambridge Moral Sciences Club.
Frustrations at Cambridge
Wittgenstein was quite vocal about his depression in his years at Cambridge and before he went to war; on many an occasion, he told Russell of his woes. His mental anguish seemed to stem from two sources: his work and his personal life. Wittgenstein made numerous remarks to Russell about the logic driving him mad. Wittgenstein also stated to Russell that he "felt the curse of those who have half a talent". He later expressed this same worry and told of being in mediocre spirits due to his lack of progress in his logical work. Monk writes that Wittgenstein lived and breathed logic, and a temporary lack of inspiration plunged him into despair. Wittgenstein told of his work in logic affecting his mental status in an extreme way. However, he also told Russell another story. Around Christmas, in 1913, he wrote: He also told Russell on an occasion in Russell's rooms that he was worried about logic and his sins; also, once upon arriving in Russell's rooms one night, Wittgenstein announced to Russell that he would kill himself once he left. Of things Wittgenstein personally told Russell, Ludwig's temperament was also recorded in the diary of
David Pinsent. Pinsent wrote and when talking about Wittgenstein's emotional fluctuations.
Sexual orientation and relationship with David Pinsent

Wittgenstein had romantic relations with both men and women. He is generally believed to have fallen in love with at least three men, and had a relationship with the latter two:
David Hume Pinsent in 1912,
Francis Skinner in 1930, and Ben Richards in the late 1940s. He later claimed that, as a teenager in Vienna, he had had an affair with a woman. Additionally, in the 1920s Wittgenstein fell in love with a young Swiss woman, Marguerite Respinger, sculpting a bust modelled on her and seriously considering marriage, albeit on condition that they would not have children; she decided that he was not right for her.

Wittgenstein's relationship with David Pinsent occurred during an intellectually formative period and is well documented. Bertrand Russell introduced Wittgenstein to Pinsent in the summer of 1912. Pinsent was a mathematics undergraduate and a relation of
David Hume
David Hume (; born David Home; – 25 August 1776) was a Scottish philosopher, historian, economist, and essayist who was best known for his highly influential system of empiricism, philosophical scepticism and metaphysical naturalism. Beg ...
, and Wittgenstein and he soon became very close. The men worked together on experiments in the psychology laboratory about the role of rhythm in the appreciation of music, and Wittgenstein delivered a paper on the subject to the
British Psychological Association in Cambridge in 1912. They also travelled together, including to
Iceland
Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...
in September 1912the expenses paid by Wittgenstein, including
first class travel
First class is the most luxurious and most expensive travel class of seats and service on a train, passenger ship, airplane, bus, or other system of transport. Compared to business class and economy class, it offers the best service and most co ...
, the hiring of a private train, and new clothes and spending money for Pinsent. In addition to Iceland, Wittgenstein and Pinsent travelled to
Norway
Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...
in 1913. In determining their destination, Wittgenstein and Pinsent visited a tourist office in search of a location that would fulfil the following criteria: a small village located on a fjord, a location away from tourists, and a peaceful destination to allow them to study logic and law. Choosing
Øystese
Øystese is a village in the municipality of Kvam in Vestland county, Norway. It is located along the Hardangerfjord about east of the municipal centre of Norheimsund. Norwegian County Road 7 passes through the village. The village had a popu ...
, Wittgenstein and Pinsent arrived in the small village on 4 September 1913. During a vacation lasting almost three weeks, Wittgenstein was able to work vigorously on his studies. The immense progress on logic during their stay led Wittgenstein to express to Pinsent his notion of leaving Cambridge and returning to Norway to continue his work on logic. Pinsent's diaries provide valuable insights into Wittgenstein's personality: sensitive, nervous, and attuned to the tiniest slight or change in mood from Pinsent. Pinsent also writes of Wittgenstein being "absolutely sulky and snappish" at times, as well. In his diaries Pinsent wrote about shopping for furniture with Wittgenstein in Cambridge when the latter was given rooms in Trinity. Most of what they found in the stores was not minimalist enough for Wittgenstein's aesthetics: He wrote in May 1912 that Wittgenstein had just begun to study the history of philosophy: The last time they saw each other was on 8 October 1913 at Lordswood House in Birmingham, then residence of the Pinsent family: Wittgenstein left to live in Norway.
1913–1920: World War I and the ''Tractatus''
Work on ''Logik''

Karl Wittgenstein died on 20 January 1913, and after receiving his inheritance Wittgenstein became one of the wealthiest men in Europe. He donated some of his money, at first anonymously, to Austrian artists and writers, including
Rainer Maria Rilke
René Karl Wilhelm Johann Josef Maria Rilke (4 December 1875 – 29 December 1926), known as Rainer Maria Rilke, was an Austrian poet and novelist. Acclaimed as an Idiosyncrasy, idiosyncratic and expressive poet, he is widely recognized as ...
and
Georg Trakl
Georg Trakl (; 3 February 1887 – 3 November 1914) was an Austrian poet and the brother of the pianist Grete Trakl. He is considered one of the most important Austrian Expressionists. He is perhaps best known for his poem " Grodek", which h ...
. Trakl requested to meet his benefactor but in 1914 when Wittgenstein went to visit, Trakl had killed himself. Wittgenstein came to feel that he could not get to the heart of his most fundamental questions while surrounded by other academics, and so in 1913, he retreated to the village of
Skjolden
Skjolden is a village in the municipality of Luster in Vestland county, Norway. It is located at the end of the Lustrafjorden, a branch of the Sognefjorden. Skjolden is located at the innermost point of the Sognefjorden, Norway's longest fjo ...
in Norway, where he rented the second floor of a house for the winter.
He later saw this as one of the most productive periods of his life, writing ''Logik'' (''Notes on Logic''), the predecessor of much of the ''Tractatus''.
While in Norway, Wittgenstein learned
Norwegian to converse with the local villagers, and
Danish to read the works of the Danish philosopher
Søren Kierkegaard
Søren Aabye Kierkegaard ( , ; ; 5 May 1813 – 11 November 1855) was a Danes, Danish theologian, philosopher, poet, social critic, and religious author who is widely considered to be the first existentialist philosopher. He wrote critical tex ...
. He adored the "quiet seriousness" of the landscape but even Skjolden became too busy for him. He soon designed a small wooden house which was erected on a remote rock overlooking the Eidsvatnet Lake just outside the village. The place was called "Østerrike" (Austria) by locals. He lived there during various periods until the 1930s, and substantial parts of his works were written there. (The house was broken up in 1958 to be rebuilt in the village. A local foundation collected donations and bought it in 2014; it was dismantled again and re-erected at its original location; the inauguration took place on 20 June 2019 with international attendance.)
It was during this time that Wittgenstein began addressing what he considered to be a central issue in ''Notes on Logic'', a general decision procedure for determining the truth value of logical propositions that would stem from a single primitive proposition. He became convinced during this time that Based on this, Wittgenstein argued that propositions of logic express their truth or falsehood in the sign itself, and one need not know anything about the constituent parts of the proposition to determine it true or false. Rather, one simply needs to identify the statement as a tautology (true), a contradiction (false), or neither.
The problem lay in forming a primitive proposition that encompassed this and would act as the basis for all of logic. As he stated in correspondence with Russell in late 1913, The importance Wittgenstein placed upon this fundamental problem was so great that he believed if he did not solve it, he had no right or desire to live. Despite this apparent life-or-death importance, Wittgenstein had given up on this primitive proposition by the time he wrote the ''Tractatus''. The ''Tractatus'' does not offer any general process for identifying propositions as tautologies; in a simpler manner, This shift to understanding tautologies through mere identification or recognition occurred in 1914 when Wittgenstein asked Moore to assist him in dictating his notes.
At Wittgenstein's insistence, Moore, who was now a Cambridge don, visited him in Norway in April 1914, reluctantly because Wittgenstein exhausted him.
David Edmonds and John Eidinow write that Wittgenstein regarded Moore, an internationally known philosopher, as an example of how far someone could get in life with ''"absolutely no intelligence whatever".'' In Norway it was clear that Moore was expected to act as Wittgenstein's secretary, taking down his notes, with Wittgenstein falling into a rage when Moore got something wrong.
Brian McGuinness
Brian McGuinness (22 October 1927 – 23 December 2019) was a Wittgenstein scholar best known for his translation, with David Pears, of the ''Tractatus-Logico-Philosophicus'', and for his biography of the first half of Wittgenstein's life.
He w ...
notes that a letter from Wittgenstein to Moore of 7 May 1914 indicates that he had intended to submit an essay he referred to as "''Logik"'' as the dissertation required for his completion of a bachelor's degree.
McGuinness asserts that the essay is unlikely to be identical with "Notes on Logic" but suggests it is at least summarised in "Notes dictated to G. E. Moore in Norway" (published in Appendix II of ''Notebooks 1914-1916'') and that "much speaks" for the supposition that it was indeed these notes that Wittgenstein had intended to submit.
According to the relevant regulations, however, such a dissertation had to contain a preface and notes in which the student stated the sources on which he had relied and the extent to which he had done so, qualities lacking in Wittgenstein's essay. Moore, though himself secretary of the relevant Moral Sciences degrees committee, showed the essay to
Walter Morley Fletcher
Sir Walter Morley Fletcher, (21 July 1873 – 7 June 1933)- was a British physiologist and administrator. Fletcher graduated from Trinity College, Cambridge
Trinity College is a Colleges of the University of Cambridge, constituent college ...
– perhaps, McGuinness suggests, "for an impartial opinion from an outsider" – and had "been told that it could not possibly pass for a dissertation" and wrote to Wittgenstein accordingly,
Wittgenstein was furious, writing to Moore: Moore was apparently distraught; writing in his diary that he felt sick and could not get the letter out of his head. Wittgenstein wrote to Moore In July of that year conceding that he had "probably no sufficient reason to write to you as I did"
but the two did not speak again until 1929.
Military service
On the outbreak of World War I, Wittgenstein immediately volunteered for the
Austro-Hungarian Army
The Austro-Hungarian Army, also known as the Imperial and Royal Army,; was the principal ground force of Austria-Hungary from 1867 to 1918. It consisted of three organisations: the Common Army (, recruited from all parts of Austria-Hungary), ...
, despite being eligible for a medical exemption.
He served first on a ship and then in an artillery workshop "several miles from the action".
He was wounded in an accidental explosion, and hospitalised to
Kraków
, officially the Royal Capital City of Kraków, is the List of cities and towns in Poland, second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city has a population of 804,237 ...
.
In March 1916, he was posted to a fighting unit on the front line of the Russian front, as part of the
Austrian 7th Army, where his unit was involved in some of the heaviest fighting, defending against the
Brusilov Offensive. Wittgenstein directed the fire of his own artillery from an observation post in no-man's land against Allied troopsone of the most dangerous jobs since he was targeted by enemy fire.
He was decorated with the
Military Merit Medal with Swords on the Ribbon, and was commended by the army for "exceptionally courageous behaviour, calmness, sang-froid, and heroism" that "won the total admiration of the troops". In January 1917, he was sent as a member of a
howitzer
The howitzer () is an artillery weapon that falls between a cannon (or field gun) and a mortar. It is capable of both low angle fire like a field gun and high angle fire like a mortar, given the distinction between low and high angle fire break ...
regiment to the Russian front, where he won several more medals for bravery including the
Silver Medal for Valour, First Class. In 1918, he was promoted to lieutenant and sent to the
Italian front as part of an artillery regiment. For his part in the final Austrian offensive of June 1918, he was recommended for the Gold Medal for Valour, one of the highest honours in the Austrian army, but was instead awarded the Band of the Military Service Medal with Swordsit being decided that this particular action, although extraordinarily brave, had been insufficiently consequential to merit the highest honour.
Throughout the war, he kept notebooks in which he frequently wrote philosophical reflections alongside personal remarks, including his contempt for the character of the other soldiers.
His notebooks also attest to his philosophical and spiritual reflections, and it was during this time that he experienced a kind of religious awakening. In his entry from 11 June 1915, Wittgenstein states that and on 8 July that He discovered
Leo Tolstoy
Count Lev Nikolayevich Tolstoy Tolstoy pronounced his first name as , which corresponds to the romanization ''Lyov''. () (; ,Throughout Tolstoy's whole life, his name was written as using Reforms of Russian orthography#The post-revolution re ...
's 1896 ''
The Gospel in Brief
''The Gospel in Brief'' () is a 1892 synthesis of the four gospels of the New Testament into one narrative of the life of Jesus by Russian author Leo Tolstoy.
Included in a larger volume in 1892, the 1896 account published as ''The Gospel in Bri ...
'' at a bookshop in
Tarnów
Tarnów () is a city in southeastern Poland with 105,922 inhabitants and a metropolitan area population of 269,000 inhabitants. The city is situated in the Lesser Poland Voivodeship. It is a major rail junction, located on the strategic east– ...
, and carried it everywhere, recommending it to anyone in distress, to the point where he became known to his fellow soldiers as "the man with the gospels".
The extent to which ''The Gospel in Brief'' influenced Wittgenstein can be seen in the ''Tractatus'', in the unique way both books number their sentences. In 1916 Wittgenstein read
Dostoevsky
Fyodor Mikhailovich Dostoevsky. () was a Russian novelist, short story writer, essayist and journalist. He is regarded as one of the greatest novelists in both Russian and world literature, and many of his works are considered highly influenti ...
's ''
The Brothers Karamazov
''The Brothers Karamazov'' ( rus, Братья Карамазовы, Brat'ya Karamazovy, ˈbratʲjə kərɐˈmazəvɨ), also translated as ''The Karamazov Brothers'', is the last novel by Russian author Fyodor Dostoevsky. Dostoevsky spent nearly ...
'' so often that he knew whole passages of it by heart, particularly the speeches of the elder Zosima, who represented for him a powerful Christian ideal, a holy man "who could see directly into the souls of other people".
Iain King
Iain Benjamin King is a British writer. King was appointed a Commander of the Order of the British Empire in the 2013 Birthday Honours, for services to governance in Libya, Afghanistan and Kosovo.
He is a Scholar at the United States Military ...
has suggested that Wittgenstein's writing changed substantially in 1916 when he started confronting much greater dangers during frontline fighting. Russell said he returned from the war a changed man, one with a deeply
mystical
Mysticism is popularly known as becoming one with God or the Absolute, but may refer to any kind of ecstasy or altered state of consciousness which is given a religious or spiritual meaning. It may also refer to the attainment of insight ...
and
ascetic
Asceticism is a lifestyle characterized by abstinence from worldly pleasures through self-discipline, self-imposed poverty, and simple living, often for the purpose of pursuing spiritual goals. Ascetics may withdraw from the world for their pra ...
attitude.
Completion of the ''Tractatus''

In the summer of 1918, Wittgenstein took military leave and went to stay in one of his family's Vienna summer houses, Neuwaldegg. It was there in August 1918 that he completed the ''Tractatus'', which he submitted with the title ''Der Satz'' (German: proposition, sentence, phrase, set, but also "leap") to the publishers Jahoda and Siegel.
A series of events around this time left him deeply upset. On 13 August, his uncle Paul died. On 25 October, he learned that Jahoda and Siegel had decided not to publish the ''Tractatus'', and on 27 October, his brother Kurt killed himself, the third of his brothers to commit suicide. It was around this time he received a letter from David Pinsent's mother to say that Pinsent had been killed in a plane crash on 8 May. Wittgenstein was distraught to the point of being suicidal. He was sent back to the Italian front after his leave and, as a result of the defeat of the Austrian army, he was captured by
Allied forces on 3 November in
Trentino
Trentino (), officially the Autonomous Province of Trento (; ; ), is an Autonomous province#Italy, autonomous province of Italy in the Northern Italy, country's far north. Trentino and South Tyrol constitute the Regions of Italy, region of Tren ...
. He subsequently spent nine months in an Italian
prisoner of war
A prisoner of war (POW) is a person held captive by a belligerent power during or immediately after an armed conflict. The earliest recorded usage of the phrase "prisoner of war" dates back to 1610.
Belligerents hold prisoners of war for a ...
Prisoner-of-war camp, camp.
He returned to his family in Vienna on 25 August 1919, by all accounts physically and mentally spent. He apparently talked incessantly about suicide, terrifying his sisters and brother Paul. He decided to do two things: to enroll in a teacher training college as an elementary school teacher, and to get rid of his fortune. In 1914, it had been providing him with an income of 300,000 Austro-Hungarian krone, Kronen a year, but by 1919 was worth a great deal more, with a sizable portfolio of investments in the United States and the Netherlands. He divided it among his siblings, except for Margarete, insisting that it not be held in trust for him. His family saw him as ill and acquiesced.
1920–1928: Teaching, the ''Tractatus'', Haus Wittgenstein
Teacher training in Vienna
In September 1919 he enrolled in the ''Lehrerbildungsanstalt'' (teacher training college) in the ''Kundmanngasse'' in Vienna. His sister Hermine said that Wittgenstein working as an elementary teacher was like using a precision instrument to open crates, but the family decided not to interfere. Thomas Bernhard, more critically, wrote of this period in Wittgenstein's life: "the multi-millionaire as a village schoolmaster is surely a piece of perversity".
Teaching posts in Austria
In the summer of 1920, Wittgenstein worked as a gardener for a monastery. At first, he applied under a false name, for a teaching post at Reichenau, and was awarded the job, but he declined it when his identity was discovered. As a teacher, he wished to no longer be recognized as a member of the Wittgenstein family. In response, his brother Paul wrote:
In 1920, Wittgenstein was given his first job as a primary school teacher in Trattenbach, under his real name, in a remote village of a few hundred people. His first letters describe it as beautiful, but in October 1921, he wrote to Russell: "I am still at Trattenbach, surrounded, as ever, by odiousness and baseness. I know that human beings on the average are not worth much anywhere, but here they are much more good-for-nothing and irresponsible than elsewhere." He was soon the object of gossip among the villagers, who found him eccentric at best. He did not get on well with the other teachers; when he found his lodgings too noisy, he made a bed for himself in the school kitchen. He was an enthusiastic teacher, offering late-night extra tuition to several of the students, something that did not endear him to the parents, though some of them came to adore him; his sister Hermine occasionally watched him teach and said the students "literally crawled over each other in their desire to be chosen for answers or demonstrations".
To the less able, it seems that he became something of a tyrant. The first two hours of each day were devoted to mathematics, hours that Monk writes some of the pupils recalled years later with horror. They reported that he caned the boys and boxed their ears, and also that he pulled the girls' hair; this was not unusual at the time for boys, but for the villagers he went too far in doing it to the girls too; girls were not expected to understand algebra, much less have their ears boxed over it. The School corporal punishment, corporal punishment apart, Monk writes that he quickly became a village legend, shouting "Krautsalat!" ("coleslaw" – i.e. shredded cabbage) when the headmaster played the piano, and "Nonsense!" when a priest was answering children's questions.
Publication of the ''Tractatus''

While Wittgenstein was living in isolation in rural Austria, the ''Tractatus Logico-Philosophicus, Tractatus'' was published to considerable interest, first in German in 1921 as ''Logisch-Philosophische Abhandlung'', part of Wilhelm Ostwald's journal ''Annalen der Naturphilosophie'', though Wittgenstein was not happy with the result and called it a pirate edition. Russell had agreed to write an introduction to explain why it was important because it was otherwise unlikely to have been published: it was difficult if not impossible to understand, and Wittgenstein was unknown in philosophy. In a letter to Russell, Wittgenstein wrote "The main point is the theory of what can be expressed (gesagt) by prop[osition]s – i.e. by language – (and, which comes to the same thing, what can be ''thought'') and what can not be expressed by pro[position]s, but only shown (gezeigt); which, I believe, is the cardinal problem of philosophy." But Wittgenstein was not happy with Russell's help. He had lost faith in Russell, finding him glib and his philosophy mechanistic, and felt he had fundamentally misunderstood the ''Tractatus''.
An English translation was prepared in Cambridge by Frank P. Ramsey, Frank Ramsey, a mathematics undergraduate at King's commissioned by
C. K. Ogden. It was Moore who suggested ''Tractatus Logico-Philosophicus'' for the title, an allusion to Baruch Spinoza's ''Tractatus Theologico-Politicus.'' Initially, there were difficulties in finding a publisher for the English edition too, because Wittgenstein was insisting it appear without Russell's introduction; Cambridge University Press turned it down for that reason. Finally in 1922 an agreement was reached with Wittgenstein that Kegan Paul would print a bilingual edition with Russell's introduction and the Ramsey-Ogden translation.
This is the translation that was approved by Wittgenstein, but it is problematic in a number of ways. Wittgenstein's English was poor at the time, and Ramsey was a teenager who had only recently learned German, so philosophers often prefer to use a 1961 translation by David Pears and
Brian McGuinness
Brian McGuinness (22 October 1927 – 23 December 2019) was a Wittgenstein scholar best known for his translation, with David Pears, of the ''Tractatus-Logico-Philosophicus'', and for his biography of the first half of Wittgenstein's life.
He w ...
.
An aim of the ''Tractatus'' is to reveal the relationship between language and the world: what can be said about it, and what can only be shown. Wittgenstein argues that the logical structure of language provides the limits of meaning. The limits of language, for Wittgenstein, are the limits of philosophy. Much of philosophy involves attempts to say the unsayable: "What we can say at all can be said clearly," he argues. Anything beyond that – religion, ethics, aesthetics, the mystical – cannot be discussed. They are not in themselves nonsensical, but any statement about them must be.
He wrote in the preface: "The book will, therefore, draw a limit to thinking, or rather – not to thinking, but to the expression of thoughts; for, in order to draw a limit to thinking we should have to be able to think both sides of this limit (we should therefore have to be able to think what cannot be thought)."
The book is 75 pages long – "As to the shortness of the book, I am ''awfully sorry for it'' ... If you were to squeeze me like a lemon you would get nothing more out of me," he told Ogden – and presents seven numbered propositions (1–7), with various sub-levels (1, 1.1, 1.11):
# ''Die Welt ist alles, was der Fall ist''.
#: The world is everything that is the case.
# ''Was der Fall ist, die Tatsache, ist das Bestehen von Sachverhalten''.
#: What is the case, the fact, is the existence of atomic facts.
# ''Das logische Bild der Tatsachen ist der Gedanke''.
#: The logical picture of the facts is the thought.
# ''Der Gedanke ist der sinnvolle Satz''.
#: The thought is the significant proposition.
# ''Der Satz ist eine Wahrheitsfunktion der Elementarsätze''.
#: Propositions are truth-functions of elementary propositions.
# ''Die allgemeine Form der Wahrheitsfunktion ist:
. Dies ist die allgemeine Form des Satzes''.
#: The general form of a truth-function is:
. This is the general form of proposition.
# ''Wovon man nicht sprechen kann, darüber muß man schweigen''.
#: Whereof one cannot speak, thereof one must be silent.
Visit from Frank Ramsey, Puchberg

In September 1922 he moved to a secondary school in a nearby village, Hassbach (Lower Austria), Hassbach, but considered the people there just as bad – "These people are not human ''at all'' but loathsome worms," he wrote to a friend – and he left after a month. In November he began work at another primary school, this time in Puchberg am Schneeberg, Puchberg in the Schneeberg (Alps), Schneeberg mountains. There, he told Russell, the villagers were "one-quarter animal and three-quarters human".
Frank P. Ramsey visited him on 17 September 1923 to discuss the ''Tractatus''; he had agreed to write a review of it for ''Mind''. He reported in a letter home that Wittgenstein was living frugally in one tiny whitewashed room that only had space for a bed, a washstand, a small table, and one small hard chair. Ramsey shared an evening meal with him of coarse bread, butter, and cocoa. Wittgenstein's school hours were eight to twelve or one, and he had afternoons free. After Ramsey returned to Cambridge a long campaign began among Wittgenstein's friends to persuade him to return to Cambridge and away from what they saw as a hostile environment for him. He was accepting no help even from his family. Ramsey wrote to John Maynard Keynes:
Teaching continues, Otterthal; Standard Austrian German; Haidbauer incident
He moved schools again in September 1924, this time to Otterthal, near Trattenbach; the socialist headmaster, Josef Putre, was someone Wittgenstein had become friends with while at Trattenbach. While he was there, he wrote a 42-page pronunciation and spelling dictionary for the children, ''Wörterbuch für Volksschulen'', published in Vienna in 1926 by :de:Hölder-Pichler-Tempsky, Hölder-Pichler-Tempsky, the only book of his apart from the ''Tractatus'' that was published in his lifetime.
A first edition sold in 2005 for £75,000.
In 2020, an English version entitled ''Word Book'' translated by art historian Bettina Funcke and illustrated by artist / publisher Paul Chan (artist), Paul Chan was released.
The ''Wörterbuch für Volksschulen'' is remarkable for its Pluricentric language, pluricentric conceptualization, decades before such a linguistic approach existed. In Wittgenstein's preface to the ''Wörterbuch'', which was withheld at the publisher's request but which survives in a 1925 typescript, Wittgenstein takes a clear stance for a Standard Austrian German, which he aimed to document for elementary pupils in the text. Wittgenstein states (translated from German) that
The dictionary should include only words, but all such words, that are known to Austrian elementary students. Therefore it excludes many a good German word unusual in Austria.
Wittgenstein is through his school dictionary one of the earliest proponents of a German with more than one standard variety.
This is especially noteworthy in the German language context, in which expert debates over the status and relevance of standard varieties are so common that some speak of a One Standard German Axiom in that field today. Wittgenstein was taking a stance for multiple standards, against such an axiom, long before these debates ensued.
An incident occurred in April 1926 and became known as ''Der Vorfall Haidbauer'' (the
Haidbauer incident). Josef Haidbauer was an 11-year-old pupil whose father had died and whose mother worked as a local maid. He was a slow learner, and one day Wittgenstein hit him two or three times on the head, causing him to collapse. Wittgenstein carried him to the headmaster's office, then quickly left the school, bumping into a parent, Herr Piribauer, on the way out. Piribauer had been sent for by the children when they saw Haidbauer collapse; Wittgenstein had previously pulled Piribauer's daughter, Hermine, so hard by the ears that her ears had bled. Piribauer said that when he met Wittgenstein in the hall that day: Piribauer tried to have Wittgenstein arrested, but the village's police station was empty, and when he tried again the next day he was told Wittgenstein had disappeared. On 28 April 1926, Wittgenstein handed in his resignation to Wilhelm Kundt, a local school inspector, who tried to persuade him to stay; however, Wittgenstein was adamant that his days as a schoolteacher were over. Proceedings were initiated in May, and the judge ordered a psychiatric report; in August 1926 a letter to Wittgenstein from a friend, Ludwig Hänsel, indicates that hearings were ongoing, but nothing is known about the case after that. Alexander Waugh writes that Wittgenstein's family and their money may have had a hand in covering things up. Waugh writes that Haidbauer died shortly afterwards of haemophilia; Monk says he died when he was 14 of leukaemia.
Ten years later, in 1936, as part of a series of "confessions" he engaged in that year, Wittgenstein appeared without warning at the village saying he wanted to confess personally and ask for pardon from the children he had hit. He visited at least four of the children, including Hermine Piribauer, who apparently replied only with a "Ja, ja," though other former students were more hospitable. Monk writes that the purpose of these confessions was not Of the apologies, Wittgenstein wrote,
The Vienna Circle
The ''Tractatus'' was now the subject of much debate among philosophers, and Wittgenstein was a figure of increasing international fame. In particular, a discussion group of philosophers, scientists, and mathematicians, known as the Vienna Circle, had developed purportedly as a result of the inspiration they had been given by reading the ''Tractatus''. While it is commonly assumed that Wittgenstein was a part of the Vienna Circle, in reality, this was not the case. German philosopher Oswald Hanfling writes bluntly: "Wittgenstein was never a member of the Circle, though he was in Vienna during much of the time."
Indeed it is doubtful, as Brian McGuinness notes, that Wittgenstein ever attended any meetings of the Vienna Circle proper.
Yet, Hanfling asserts, "his influence on the Circle's thought was at least as important as that of any of its members."
Philosopher A. C. Grayling, however, contends that while certain superficial similarities between Wittgenstein's early philosophy and logical positivism led its members to study the ''Tractatus'' in detail and to arrange discussions with him, Wittgenstein's influence on the Circle was rather limited. The fundamental philosophical views of Circle had been established before they met Wittgenstein and had their origins in the Empiricism, British empiricists, Ernst Mach, and the logic of Gottlob Frege, Frege and Russell. Whatever influence Wittgenstein did have on the Circle was largely limited to Moritz Schlick and Friedrich Waismann and, even in these cases, had little lasting effect on their positivism. Grayling states that "it is no longer possible to think of the ''Tractatus'' as having inspired a philosophical movement, as most earlier commentators claimed."
Schlick first met Wittgenstein in 1927 and did so several times before the latter would agree to be introduced to some of his colleagues. From 1927 to 1928 Wittgenstein met with small groups that included Schlick, almost always Waismann, sometimes Rudolf Carnap, and sometimes Herbert Feigl and his future wife Maria Kesper. From 1929, Wittgenstein's contact with the Circle would be restricted to meetings with Schlick and Waismann only.
Conversations from these later meetings (December 1929 up to March 1932) were recorded by Waismann and eventually published in English translation in ''Ludwig Wittgenstein and the Vienna Circle'' (1979).
By the time they began Schlick had tasked Waismann with writing an exposition of Wittgenstein's philosophy. This project would undergo radical transformation but the final text, inspired by Wittgenstein but very much Waismann's own work, was eventually published in English as ''The Principles of Linguistic Philosophy'' (1965).
Some further draft materials for the project and dictations were published in English under the editorship of Gordon Baker in 2003.
In his autobiography, Rudolf Carnap describes Wittgenstein as the thinker who most inspired him. However, he also wrote that "there was a striking difference between Wittgenstein's attitude toward philosophical problems and that of Schlick and myself. Our attitude toward philosophical problems was not very different from that which scientists have toward their problems." As for Wittgenstein:
Haus Wittgenstein
In 1926 Wittgenstein was again working as a gardener for a number of months, this time at the monastery of Hütteldorf, where he had also inquired about becoming a monk. His sister, Margaret, invited him to help with the design of her new townhouse in Vienna's ''Kundmanngasse''. Wittgenstein, his friend Paul Engelmann, and a team of architects developed a spare modernist house. In particular, Wittgenstein focused on the windows, doors, and radiators, demanding that every detail be exactly as he specified. When the house was nearly finished Wittgenstein had an entire ceiling raised 30 mm so that the room had the exact proportions he wanted. Monk writes that "This is not so marginal as it may at first appear, for it is precisely these details that lend what is otherwise a rather plain, even ugly house its distinctive beauty."
It took him a year to design the door handles and another to design the radiators. Each window was covered by a metal screen that weighed , moved by a pulley Wittgenstein designed. Bernhard Leitner, author of ''The Architecture of Ludwig Wittgenstein'', said there is barely anything comparable in the history of interior design: "It is as ingenious as it is expensive. A metal curtain that could be lowered into the floor."
The house was finished by December 1928 and the family gathered there at Christmas to celebrate its completion. Wittgenstein's sister Hermine wrote: "Even though I admired the house very much. ... It seemed indeed to be much more a dwelling for the gods."
Wittgenstein said "the house I built for Gretl is the product of a decidedly sensitive ear and ''good'' manners, and expression of great ''understanding''... But ''primordial'' life, wild life striving to erupt into the open – that is lacking." Monk comments that the same might be said of the technically excellent, but austere, terracotta sculpture Wittgenstein had modelled of Marguerite Respinger in 1926, and that, as Russell first noticed, this "wild life striving to be in the open" was precisely the substance of Wittgenstein's philosophical work.
1929–1941: Fellowship at Cambridge
PhD and fellowship

According to Feigl (as reported by Monk), upon attending a conference in Vienna by mathematician L. E. J. Brouwer, Wittgenstein remained quite impressed, taking into consideration the possibility of a "return to Philosophy". At the urging of Ramsey and others, Wittgenstein returned to Cambridge in 1929. Keynes wrote in a letter to his wife: "Well, God has arrived. I met him on the 5.15 train." Despite this fame, he could not initially work at Cambridge as he had failed to obtain a degree, so he applied as an advanced undergraduate. Russell noted that his previous residency was sufficient to fulfil eligibility requirements for a PhD, and urged him to offer the ''Tractatus'' as his thesis. It was examined in 1929 by Russell and Moore; at the end of the thesis defence, Wittgenstein clapped the two examiners on the shoulder and said, '"Don't worry, I know you'll never understand it." Braithwaite, quoting from memory, recalls that Moore wrote in the examiner's report: "I myself consider that this is a work of genius; but, even if I am completely mistaken and it is nothing of the sort, it is well above the standard required for the Ph.D. degree." Wittgenstein was appointed as a lecturer and was made a fellow of Trinity College.
Anschluss
From 1936 to 1937, Wittgenstein lived again in Norway, where he worked on the ''Philosophical Investigations''. In the winter of 1936/7, he delivered a series of "confessions" to close friends, most of them about minor infractions like white lies, in an effort to cleanse himself. In 1938, he travelled to Ireland to visit Maurice O'Connor Drury, a friend who became a psychiatrist, and considered such training himself, with the intention of abandoning philosophy for it. The visit to Ireland was at the same time a response to the invitation of the then Irish Taoiseach, Éamon de Valera, himself a former mathematics teacher. De Valera hoped Wittgenstein's presence would contribute to the Dublin Institute for Advanced Studies which he was soon to set up.
While he was in Ireland in March 1938, Germany annexed Austria in the ''Anschluss''; the Viennese Wittgenstein was now a Jew under the Nuremberg Laws, 1935 Nuremberg racial laws, because three of his grandparents had been born as Jews. He would also, in July, become by law a 'national' of the enlarged Nazi Germany, Germany being, as a Jew, ineligible to become a Reich citizen. The Nuremberg Laws classified people as Jews (''Volljuden'') if they had three or four Jewish grandparents, and as mixed blood (''Mischling'') if they had one or two. It meant, among other things, that the Wittgensteins were restricted in whom they could marry or have sex with, and where they could work.
After the Anschluss, his brother Paul left almost immediately for England, and later the US. The Nazis discovered his relationship with Hilde Schania, a brewer's daughter with whom he had had two children but whom he had never married, though he did later. Because she was not Jewish, he was served with a summons for (racial defilement). He told no one he was leaving the country, except for Hilde who agreed to follow him. He left so suddenly and quietly that for a time people believed he was the fourth Wittgenstein brother to have committed suicide.
Wittgenstein began to investigate acquiring British or Irish citizenship with the help of Keynes, and apparently had to confess to his friends in England that he had earlier misrepresented himself to them as having just one Jewish grandparent, when in fact he had three.
A few days before the invasion of Poland, Hitler personally granted ''Mischling'' status to the Wittgenstein siblings. In 1939 there were 2,100 applications for ''Mischling'' status (or for 'promotions' within such status) and Hitler granted only 12. Anthony Gottlieb writes that the pretext was that their paternal grandfather had been the bastard son of a German prince, which allowed the Reichsbank to claim foreign currency, stocks and 1700 kg of gold held in Switzerland by a Wittgenstein family trust. Gretl, an American citizen by marriage, started the negotiations over the racial status of their grandfather, and the family's large foreign currency reserves were used as a bargaining tool. Paul had escaped to Switzerland and then the US in July 1938, and disagreed with the negotiations, leading to a permanent split between the siblings. After the war, when Paul was performing in Vienna, he did not visit Hermine who was dying there, and he had no further contact with Ludwig or Gretl.
Professor of philosophy
After
G. E. Moore
George Edward Moore (4 November 1873 – 24 October 1958) was an English philosopher, who with Bertrand Russell, Ludwig Wittgenstein and earlier Gottlob Frege was among the initiators of analytic philosophy. He and Russell began de-emphasizing ...
resigned the chair in philosophy in 1939, Wittgenstein was elected. He was naturalised as a British subject shortly after on 12 April 1939. In July 1939 he travelled to Vienna to assist Gretl and his other sisters, visiting Berlin for one day to meet an official of the Reichsbank. After this, he travelled to New York to persuade Paul, whose agreement was required, to back the scheme. The required ''Befreiung'' was granted in August 1939. The unknown amount signed over to the Nazis by the Wittgenstein family, a week or so before the outbreak of war, included amongst many other assets 1,700 kg of gold.
Norman Malcolm, at the time a post-graduate research fellow at Cambridge, describes his first impressions of Wittgenstein in 1938:
Describing Wittgenstein's lecture programme, Malcolm continues:
After work, the philosopher would often relax by watching Western Movie, Westerns, where he preferred to sit at the very front of the cinema, or reading detective stories especially the ones written by Norbert Davis. Norman Malcolm wrote that Wittgenstein would rush to the cinema when class ended.
By this time, Wittgenstein's view on the
foundations of mathematics
Foundations of mathematics are the mathematical logic, logical and mathematics, mathematical framework that allows the development of mathematics without generating consistency, self-contradictory theories, and to have reliable concepts of theo ...
had changed considerably. In his early 20s, Wittgenstein had thought logic could provide a solid foundation, and he had even considered updating Russell and Alfred North Whitehead, Whitehead's ''Principia Mathematica''. Now he denied there were any mathematical facts to be discovered. He gave a series of lectures on mathematics, discussing this and other topics, documented in a book, with some of his lectures and discussions between him and several students, including the young Alan Turing, who described Wittgenstein as ''"a ''very'' peculiar man"''. The two had many discussions about the relationship between computational logic and everyday notions of truth.
Wittgenstein's lectures from this period have also been discussed by another of his students, the Greek philosopher and educator Elli Lambridi, Helle Lambridis. Wittgenstein's teachings in the years 1940–1941 were used in the mid-1950s by Lambridis to write a long text in the form of an imagined dialogue with him, where she begins to develop her own ideas about resemblance in relation to language, elementary concepts and basic-level mental images. Initially, only a part of it was published in 1963 in the German education theory review ''Club Voltaire'', but the entire imagined dialogue with Wittgenstein was published after Lambridis's death by her archive holder, the Academy of Athens (modern), Academy of Athens, in 2004.
1941–1947: Guy's Hospital and Royal Victoria Infirmary
Monk writes that Wittgenstein found it intolerable that a war (World War II) was going on and he was teaching philosophy. He grew angry when any of his students wanted to become professional philosophers.
In September 1941, he asked John Ryle (professor), John Ryle, the brother of the philosopher Gilbert Ryle, if he could get a manual job at Guy's Hospital in London. John Ryle was professor of medicine at Cambridge and had been involved in helping Guy's prepare for the Blitz. Wittgenstein told Ryle he would die slowly if left at Cambridge, and he would rather die quickly. He started working at Guy's shortly afterwards as a dispensary porter, delivering drugs from the pharmacy to the wards where he apparently advised the patients not to take them. In the new year of 1942, Ryle took Wittgenstein to his home in Sussex to meet his wife who had been determined to meet him. His son recorded the weekend in his diary; The hospital staff were not told he was one of the world's most famous philosophers, though some of the medical staff did recognize him – at least one had attended Moral Sciences Club meetings – but they were discreet. "Good God, don't tell anybody who I am!" Wittgenstein begged one of them. Some of them nevertheless called him Professor Wittgenstein, and he was allowed to dine with the doctors. He wrote on 1 April 1942: "I no longer feel any hope for the future of my life. It is as though I had before me nothing more than a long stretch of living death. I cannot imagine any future for me other than a ghastly one. Friendless and joyless." It was at this time that Wittgenstein had an operation at Guy's to remove a gallstone that had troubled him for some years.
He had developed a friendship with Keith Kirk, a working-class teenage friend of
Francis Skinner, the mathematics undergraduate he had had a relationship with until Skinner's death in 1941 from polio. Skinner had given up academia, thanks at least in part to Wittgenstein's influence, and had been working as a mechanic in 1939, with Kirk as his apprentice. Kirk and Wittgenstein struck up a friendship, with Wittgenstein giving him lessons in physics to help him pass a City and Guilds exam. During his period of loneliness at Guy's he wrote in his diary: "For ten days I've heard nothing more from K, even though I pressed him a week ago for news. I think that he has perhaps broken with me. A ''tragic'' thought!" Kirk had in fact got married, and they never saw one another again.
While Wittgenstein was at Guy's he met Basil Reeve, a young doctor with an interest in philosophy, who, with R. T. Grant,
was studying the effect of wound shock (a state associative to hypovolaemia) on air-raid casualties. When the Blitz ended there were fewer casualties to study. In November 1942, Grant and Reeve moved to the
Royal Victoria Infirmary
The Royal Victoria Infirmary (RVI) is a 673-bed tertiary referral hospital and research centre in Newcastle upon Tyne, England, with strong links to Newcastle University.
The hospital is part of the Newcastle upon Tyne Hospitals NHS Foundation T ...
,
Newcastle upon Tyne
Newcastle upon Tyne, or simply Newcastle ( , Received Pronunciation, RP: ), is a City status in the United Kingdom, cathedral city and metropolitan borough in Tyne and Wear, England. It is England's northernmost metropolitan borough, located o ...
, to study road traffic and industrial casualties. Grant offered Wittgenstein a position as a laboratory assistant at a wage of £4 per week, and he lived in Newcastle (at 28 Brandling Park, Jesmond
) from 29 April 1943 until February 1944. While there he worked
and associated socially with Erasmus Darwin Barlow, Erasmus Barlow,
a great-grandson of Charles Darwin.
In the summer of 1946, Wittgenstein thought often of leaving Cambridge and resigning his position as Chair. Wittgenstein grew further dismayed at the state of philosophy, particularly about articles published in the journal Mind (journal), ''Mind''. It was around this time that Wittgenstein fell in love with Ben Richards (who was a medical student), writing in his diary, "The only thing that my love for B. has done for me is this: it has driven the other small worries associated with my position and my work into the background." On 30 September, Wittgenstein wrote about Cambridge after his return from Swansea, "Everything about the place repels me. The stiffness, the artificiality, the self-satisfaction of the people. The university atmosphere nauseates me."
Wittgenstein had only maintained contact with Fouracre, from Guy's hospital, who had joined the army in 1943 after his marriage, only returning in 1947. Wittgenstein maintained frequent correspondence with Fouracre during his time away displaying a desire for Fouracre to return home urgently from the war.
In May 1947, Wittgenstein addressed a group of Oxford philosophers for the first time at the Jowett Society. The discussion was on the validity of René Descartes, Descartes' ''Cogito ergo sum'', where Wittgenstein ignored the question and applied his own philosophical method. Harold Arthur Prichard who attended the event was not pleased with Wittgenstein's methods;
1947–1951: Final years
Wittgenstein resigned from the professorship at Cambridge in 1947 to concentrate on his writing, and in 1947 and 1948 travelled to Ireland, staying at Ross's Hotel in Dublin and at a farmhouse in Redcross, County Wicklow, where he began the manuscript MS 137, volume R.
Seeking solitude he moved to a holiday cottage in Rosroe overlooking Killary Harbour, Connemara owned by Drury's brother.
He also accepted an invitation from Norman Malcolm, then a professor at Cornell University, to stay with him and his wife for several months in Ithaca, New York. He made the trip in April 1949, although he told Malcolm he was too unwell to do philosophical work: "I haven't done any work since the beginning of March & I haven't had the strength of even trying to do any." A doctor in Dublin had diagnosed anaemia and prescribed iron and liver pills. The details of Wittgenstein's stay in the US are recounted in Norman Malcolm's ''Ludwig Wittgenstein: A Memoir''. During his summer in the US, Wittgenstein began his epistemological discussions, in particular his engagement with philosophical scepticism, that would eventually become the final fragments ''On Certainty''.
He returned to London, where he was diagnosed with an inoperable prostate cancer, which had spread to his bone marrow. He spent the next two months in Vienna, where his sister Hermine died on 11 February 1950; he went to see her every day, but she was hardly able to speak or recognize him. "Great loss for me and all of us," he wrote. "Greater than I would have thought." He moved frequently after Hermine's death, staying with various friends: to Cambridge in April 1950, where he stayed with Georg Henrik von WG. H. von Wright; to London to stay with Rush Rhees; then to Oxford to see Elizabeth Anscombe, writing to Norman Malcolm that he was doing hardly any philosophy. He went to Norway in August with Ben Richards, then returned to Cambridge, where on 27 November he moved into ''Storey's End'' at 76 Storey's Way, the home of his doctor, Edward Vaughan Bevan, Edward Bevan, and his wife Joan; he had told them he did not want to die in a hospital, so they said he could spend his last days in their home instead. Joan at first was afraid of Wittgenstein, but they soon became good friends.
By the beginning of 1951, it was clear that he had little time left. He wrote a new will in Oxford on 29 January, naming Rhees as his executor, and Anscombe and von Wright as his literary administrators, and wrote to Norman Malcolm that month to say, "My mind's completely dead. This isn't a complaint, for I don't really suffer from it. I know that life must have an end once and that mental life can cease before the rest does." In February, he returned to the Bevans' home to work on MS 175 and MS 176. These and other manuscripts were later published as ''Remarks on Colour'' and ''On Certainty''.
He wrote to Malcolm on 16 April, 13 days before his death:
Death

Wittgenstein began work on his final manuscript, MS 177, on 25 April 1951. It was his 62nd birthday on 26 April. He went for a walk the next afternoon, and wrote his last entry that day, 27 April. That evening, he became very ill; when his doctor told him he might live only a few days, he reportedly replied, "Good!". Joan stayed with him throughout that night, and just before losing consciousness for the last time on 28 April, he told her: "Tell them I've had a wonderful life." Norman Malcolm describes this as a "strangely moving utterance".
Four of Wittgenstein's former students arrived at his bedside – Ben Richards, Elizabeth Anscombe, Yorick Smythies, and Maurice O'Connor Drury. Anscombe and Smythies were Catholics, and, at the latter's request, a Dominican friar, Father Conrad Pepler, also attended. (Wittgenstein had asked for a "priest who was not a philosopher" and had met with Pepler several times.) They were at first unsure what Wittgenstein would have wanted, but then remembered he had said he hoped his Catholic friends would pray for him, so they did, and he was pronounced dead shortly afterwards.

Wittgenstein was given a Catholic burial at Ascension Parish Burial Ground in Cambridge. Drury later said he had been troubled ever since about whether that was the right thing to do. In 2015 the Ledger stone, ledger gravestone was refurbished by the British Wittgenstein Society.
As for his religious views, Wittgenstein was said to be greatly interested in Catholicism, and was sympathetic to it, but did not consider himself to be a Catholic. According to Norman Malcolm, Wittgenstein saw Catholicism more as a way of life than as a set of beliefs he held, considering that he did not accept any religious faith.
Wittgenstein was said by some commentators to be agnostic, in a qualified sense.
1953: Publication of the ''Philosophical Investigations''

The ''Blue and Brown Books, Blue Book'', a set of notes dictated to his class at Cambridge in 1933–1934, contains the seeds of Wittgenstein's later thoughts on language and is widely read as a turning point in his philosophy of language.
''Philosophical Investigations'' was published in two parts in 1953. Most of Part I was ready for printing in 1946, but Wittgenstein withdrew the manuscript from his publisher. The shorter Part II was added by his editors, Elizabeth Anscombe and Rush Rhees. Wittgenstein asks the reader to think of language as a multiplicity of language games within which parts of language develop and function. He argues that the bewitchments of philosophical problems arise from philosophers' misguided attempts to consider the meaning of words independently of their context, usage, and grammar — what he called "language gone on holiday".
According to Wittgenstein, philosophical problems arise when language is forced from its proper home into a metaphysical environment, where all the familiar and necessary landmarks and contextual clues are removed. He describes this metaphysical environment as like being on frictionless ice: where the conditions are apparently perfect for a philosophically and logically perfect language, all philosophical problems can be solved without the muddying effects of everyday contexts; but where, precisely because of the lack of friction, language can in fact do no work at all. Wittgenstein argues that philosophers must leave the frictionless ice and return to the "rough ground" of ordinary language in use. Much of the ''Investigations'' consists of examples of how the first false steps can be avoided, so that philosophical problems are dissolved, rather than solved: "The clarity we are aiming at is indeed ''complete'' clarity. But this simply means that the philosophical problems should ''completely'' disappear."
Other posthumous publications
Wittgenstein's archive of unpublished papers included 83 manuscripts, 46 typescripts and 11 dictations, amounting to an estimated 20,000 pages. Choosing among repeated drafts, revisions, corrections, and loose notes, editorial work has found nearly one-third of the total suitable for print. An Internet facility hosted by the University of Bergen allows access to images of almost all the material and to search the available transcriptions. In 2011, two new boxes of Wittgenstein papers, thought to have been lost during the Second World War, were found.
What became the ''
Philosophical Investigations
''Philosophical Investigations'' () is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953.
''Philosophical Investigations'' is divided into two parts, consisting of what Wittgenstein calls, in the preface, ''Bemer ...
'' was already close to completion in 1951. Wittgenstein's three literary executors prioritized it, both because of its intrinsic importance and because he had explicitly intended publication. The book was published in 1953.
At least three other works were more or less finished. Two were already "bulky typescripts", the ''Philosophical Remarks'' and ''Philosophical Grammar''. Literary co-executor G. H. von Wright stated, "They are virtually completed works. But Wittgenstein did not publish them." The third was ''Remarks on Colour''. "He wrote ''inter alia, i.a.'' a fair amount on colour-concepts, and this material he did excerpt and polish, reducing it to a small compass."
Legacy
Assessment
Bertrand Russell
Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British philosopher, logician, mathematician, and public intellectual. He had influence on mathematics, logic, set theory, and various areas of analytic ...
described Wittgenstein as "perhaps the most perfect example I have ever known of genius as traditionally conceived; passionate, profound, intense, and dominating."
In 1999, a survey among American university and college teachers ranked the ''Investigations'' as the most important book of 20th-century philosophy, standing out as "the one crossover masterpiece in twentieth-century philosophy, appealing across diverse specializations and philosophical orientations".
The ''Investigations'' also ranked 54th on a list of most influential twentieth-century works in cognitive science prepared by the University of Minnesota's Center for Cognitive Sciences.
Duncan J. Richter of the Virginia Military Institute, writing for the ''Internet Encyclopedia of Philosophy'', has described Wittgenstein as "one of the most influential philosophers of the twentieth century, and regarded by some as the most important since Immanuel Kant." Peter Hacker argues that Wittgenstein's influence on 20th-century analytical philosophy can be attributed to his early influence on the Vienna Circle and later influence on the Oxford Ordinary language philosophy, "ordinary language" school and Cambridge philosophers.
He is considered by some to be one of the greatest philosophers of the modern era.
But despite its deep influence on analytical philosophy, Wittgenstein's work did not always gain a positive reception. Argentine-Canadian philosopher Mario Bunge asserts that "Wittgenstein is popular because he is trivial."
Scholarly interpretation
There are many diverging interpretations of Wittgenstein's thought. In the words of his friend and colleague Georg Henrik von Wright:
Since Wittgenstein's death, scholarly interpretations of his philosophy have differed. Scholars have differed on the continuity between the so-called early Wittgenstein and the so-called late(r) Wittgenstein (that is, the difference between his views expressed in the ''Tractatus'' and those in ''Philosophical Investigations''), with some seeing the two as starkly disparate and others stressing the gradual transition between the two works through analysis of Wittgenstein's unpublished papers (the ''Nachlass'').
The New Wittgenstein
One significant debate in Wittgenstein scholarship concerns the work of interpreters who are referred to under the banner of The New Wittgenstein school such as Cora Diamond, Alice Crary, and James F. Conant. While the ''Tractatus'', particularly in its conclusion, seems paradoxical and self-undermining, New Wittgenstein scholars advance a "therapeutic approach, therapeutic" understanding of Wittgenstein's work – "an understanding of Wittgenstein as aspiring, not to advance metaphysical theories, but rather to help us work ourselves out of confusions we become entangled in when philosophizing." To support this goal, the New Wittgenstein scholars propose a reading of the ''Tractatus'' as "plain nonsense" – arguing it does not attempt to convey a substantive philosophical project but instead simply tries to push the reader to abandon philosophical speculation. The therapeutic approach traces its roots to the philosophical work of John Wisdom and of Oets Kolk Bouwsma.
The therapeutic approach is not without critics: Hans-Johann Glock argues that the "plain nonsense" reading of the ''Tractatus'' "is at odds with the external evidence, writings and conversations in which Wittgenstein states that the ''Tractatus'' is committed to the idea of ineffable insight."
Hans Sluga
Hans D. Sluga (; born 24 April 1937) is a German philosopher who spent most of his career as professor of philosophy at the University of California, Berkeley. Sluga teaches and writes on topics in the history of analytic philosophy, the history ...
and Rupert Read have advocated a "post-Therapeutic approach, therapeutic" or "liberatory" interpretation of Wittgenstein.
Bertrand Russell
In October 1944, Wittgenstein returned to Cambridge around the same time as did Russell, who had been living in the United States for several years. Russell returned to Cambridge after a backlash in the US to his writings on morals and religion. Wittgenstein said of Russell's works to Drury:Russell made similar disparaging comments about Wittgenstein's later work:
Saul Kripke
Saul Kripke's 1982 book ''Wittgenstein on Rules and Private Language'' contends that the central argument of Wittgenstein's ''
Philosophical Investigations
''Philosophical Investigations'' () is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953.
''Philosophical Investigations'' is divided into two parts, consisting of what Wittgenstein calls, in the preface, ''Bemer ...
'' is a devastating rule-following paradox that undermines the possibility of ever following rules in our use of language. Kripke writes that this paradox is "the most radical and original sceptical problem that philosophy has seen to date".
Kripke's book generated a large secondary literature, divided between those who find his sceptical problem interesting and perceptive, and others, such as John McDowell, Stanley Cavell, Gordon Baker, Peter Hacker, Colin McGinn,
and Peter Winch who argue that his scepticism of meaning is a pseudo-problem that stems from a confused, selective reading of Wittgenstein. Kripke's position has, however, recently been defended against these and other attacks by the Cambridge philosopher Martin Kusch (2006).
Works
A collection of Ludwig Wittgenstein's manuscripts is held by Trinity College, Cambridge.
* ''Logisch-Philosophische Abhandlung'', Annalen der Naturphilosophie, 14 (1921)
** ''
Tractatus Logico-Philosophicus
The ''Tractatus Logico-Philosophicus'' (widely abbreviated and Citation, cited as TLP) is the only book-length philosophical work by the Austrian philosopher Ludwig Wittgenstein that was published during his lifetime. The project had a broad goal ...
'' [''TLP''], translated by Charles Kay Ogden, C. K. Ogden (1922)
* "
Some Remarks on Logical Form" (1929), ''Aristotelian Society Supplementary Volume'', Volume 9, Issue 1, 15 July 1929, pp. 162–171.
* ''Philosophische Untersuchungen'' (1953)
**
* ''Bemerkungen über die Grundlagen der Mathematik'', ed. by G. H. von Wright, R. Rhees, and G. E. M. Anscombe (1956), a selection of his work on the philosophy of logic and mathematics between 1937 and 1944.
** ''Remarks on the Foundations of Mathematics'', translated by G. E. M. Anscombe, rev. ed. (1978)
* ''Bemerkungen über die Philosophie der Psychologie'', ed. G. E. M. Anscombe and G. H. von Wright (1980)
** ''Remarks on the Philosophy of Psychology, Vols. 1 and 2'', translated by G. E. M. Anscombe, ed. G. E. M. Anscombe and G. H. von Wright (1980), a selection of which makes up ''Zettel''.
* ''Blue and Brown Books'' (1958), notes dictated in English to Cambridge students in 1933–1935.
* ''Philosophische Bemerkungen'', ed. by Rush Rhees (1964)
* ''Lectures and Conversations on Aesthetics, Psychology, and Religious Belief'', ed. by Y. Smythies, R. Rhees, and J. Taylor (1967)
* ''Remarks on Frazer's Golden Bough'', ed. by R. Rhees (1967)
** ''Philosophical Remarks'' (1975)
** ''Philosophical Grammar'' (1978)
* ''Bemerkungen über die Farben'', ed. by G. E. M. Anscombe (1977)
** ''Remarks on Colour'' (1991), remarks on Johann Wolfgang von Goethe, Goethe's ''Theory of Colours''.
* ''On Certainty'', collection of aphorisms discussing the relation between knowledge and certainty, extremely influential in the philosophy of action (1969)
* ''Culture and Value: A Selection from the Posthumous Remains'', collection of personal remarks about cultural issues, such as religion and music, as well as a critique of
Søren Kierkegaard
Søren Aabye Kierkegaard ( , ; ; 5 May 1813 – 11 November 1855) was a Danes, Danish theologian, philosopher, poet, social critic, and religious author who is widely considered to be the first existentialist philosopher. He wrote critical tex ...
's philosophy (1984, revised edition 1998).
* ''Zettel (Wittgenstein), Zettel'', collection of Wittgenstein's thoughts in fragmentary "diary entry" format as with ''On Certainty'' and ''Culture and Value'' (1967).
* ''Notebooks, 1914–1916'', translated by G. E. M. Anscombe. Oxford: Basil Blackwell; New York: Harper & Row, Publishers, 1961.
* ''Private Notebooks, 1914–1916'', translated by Marjorie Perloff. New York: Liveright Publishing Corporation, 2022.
* ''The Big Typescript: TS 213 German-English Scholars' Edition''. Wiley-Blackwell, 2012
Unpublished typescript from 1933, written between the ''Tractatus'' and ''Philosophical Investigations''* ''Movements of Thought: Ludwig Wittgenstein's Diary, 1930–1932 and 1936–1937''. New York: Rowman & Littlefield Publishers, 2023.
* ''Public and Private Occasions''. New York: Rowman & Littlefield Publishers, 2003.
* Gibson, Arthur and O'Mahony, Niamh, eds. (2020)
''Ludwig Wittgenstein: Dictating Philosophy'' New York: Springer Publishing. Previously unpublished manuscripts dictated to
Francis Skinner.
;Works online
''Wittgenstein: Gesamtbriefwechsel/Complete Correspondence''. Innsbrucker Electronic Edition ''Ludwig Wittgenstein: Gesamtbriefwechsel/Complete Correspondence'' contains Wittgenstein's collected correspondence, edited under the auspices of the Brenner-Archiv's Research Institute (University of Innsbruck). Editors (first edition): Monika Seekircher, Brian McGuinness and Anton Unterkircher. Editors (second edition): Anna Coda, Gabriel Citron, Barbara Halder, Allan Janik, Ulrich Lobis, Kerstin Mayr, Brian McGuinness, Michael Schorner, Monika Seekircher and Joseph Wang.
''Wittgensteins Nachlass''. The Bergen Electronic Edition The collection includes all of Wittgenstein's unpublished manuscripts, typescripts, dictations, and most of his notebooks. The Nachlass was catalogued by G. H. von Wright in his "The Wittgenstein Papers", first published in 1969, and later updated and included as a chapter with the same title in his book ''Wittgenstein'', published by Blackwell (and by the University of Minnesota Press in the U.S.) in 1982.
Review of P. Coffey's ''Science of Logic'' (1913): a polemical book review, written in 1912 for the March 1913 issue of ''The Cambridge Review'' when Wittgenstein was an undergraduate studying with Russell. The review is the earliest public record of Wittgenstein's philosophical views.
''Nachlass'' online*
''Bemerkungen über die Farben (Remarks on Colour)''*
Some Remarks on Logical Form
*
See also
* Definitions of philosophy
* International Wittgenstein Symposium
* Antiphilosophy#Wittgenstein's metaphilosophy, Paul Horwich's views on the Antiphilosophy of Wittgenstein
Footnotes
References
Sources
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
pp. 51ff*
* McGuinness, Brian and von Wright, G. H., eds. ''Ludwig Wittgenstein: Cambridge Letters: Correspondence with Russell, Keynes, Moore, Ramsey and Sraffa''. Blackwell, 1995.
*
*
*
*
*
*
*
*
*
*
* Original German and C. K. Ogden's English translation side by side.
Further reading
Bergen and Cambridge archives
Wittgenstein Archives at the University of Bergen. Retrieved 16 September 2010.
:
Wittgenstein News University of Bergen. Retrieved 16 September 2010.
:
Wittgenstein Source University of Bergen. Retrieved 16 September 2010.
The Cambridge Wittgenstein Archive Retrieved 16 September 2010.
Papers about his ''Nachlass''
*
Via HAL archives-ouvertes.frVia zenodo
* Von Wright, G.H
"The Wittgenstein Papers"
''The Philosophical Review''. 78, 1969.
Other
* Joseph Agassi, Agassi, J. ''Ludwig Wittgenstein's Philosophical Investigations: An Attempt at a Critical Rationalist Appraisal''. Cham: Springer, 2018, Synthese Library, vol. 401.
*
*
* Gordon Park Baker, Baker, G.P. and Peter Hacker, Hacker, P. M. S. ''Wittgenstein: Understanding and Meaning''. Blackwell, 1980.
* Baker, G.P. and Hacker, P. M. S. ''Wittgenstein: Rules, Grammar, and Necessity''. Blackwell, 1985.
* Baker, G.P. and Hacker, P. M. S. ''Wittgenstein: Meaning and Mind''. Blackwell, 1990.
* Baker, Gordon P., and Katherine J. Morris. ''Wittgenstein's Method: Neglected Aspects: Essays on Wittgenstein.'' Malden, MA: Blackwell, 2004.
*
* Brockhaus, Richard R. ''Pulling Up the Ladder: The Metaphysical Roots of Wittgenstein's Tractatus Logico-Philosophicus''. Open Court, 1990.
* James F. Conant, Conant, James F. "Putting Two and Two Together: Kierkegaard, Wittgenstein, and the Point of View for Their Work as Authors" in ''The Grammar of Religious Belief'', edited by D.Z. Phillips. New York: St. Martin's Press, 1996.
* Cook, John W. ''The Undiscovered Wittgenstein: The Twentieth Century's Most Misunderstood Philosopher''. Amherst, NY: Humanity Books, 2005.
*
*
*
*
*
* Engelmann, Paul. ''Letters from Ludwig Wittgenstein With a Memoir''. Blackwell, 1967; New York: Horizon Press, 1968. The memoir is reprinted in F. A. Flowers III and Ian Ground, eds., ''Portraits of Wittgenstein'', ch. 20 (2015) [1999], and ''Portraits of Wittgenstein: Abridged Edition'', ch. 13 (2018). Bloomsbury Academic.
*
*
*
* Hacker, P. M. S. ''Insight and Illusion: Themes in the Philosophy of Wittgenstein''. Clarendon Press, 1986.
* Hacker, P. M. S. "Wittgenstein, Ludwig Josef Johann", in Ted Honderich (ed.). ''The Oxford Companion to Philosophy''. Oxford University Press, 1995.
* Hacker, P. M. S. ''Wittgenstein's Place in Twentieth Century Analytic Philosophy''. Blackwell, 1996.
* Hacker, P. M. S. ''Wittgenstein: Mind and Will''. Blackwell, 1996.
* Jim Holt (philosopher), Holt, Jim, "Positive Thinking" (review of Karl Sigmund, ''Exact Thinking in Demented Times: The Vienna Circle and the Epic Quest for the Foundations of Science'', Basic Books, 449 pp.), ''The New York Review of Books'', vol. LXIV, no. 20 (21 December 2017), pp. 74–76.
* Jareño-Alarcón, Joaquín. ''Ludwig Wittgenstein: The Meaning of Life''. Wiley-Blackwell, 2023.
* Kari Jormakka, Jormakka, Kari. "The Fifth Wittgenstein", ''Datutop'' 24, 2004, a discussion of the connection between Wittgenstein's architecture and his philosophy.
* Kinlen, Leo. "Wittgenstein in Newcastle". In ''Northern Review'', vol. 13 (2003-2004), pp. 11-31.
*
* Klagge, James C. ''Wittgenstein's Artillery: Philosophy as Poetry''. Cambridge, Massachusetts: The MIT Press, 2021.
* Klagge, James C. ''Simply Wittgenstein''. New York: Simply Charly, 2016.
* Klagge, James C. ''Wittgenstein in Exile''. Cambridge, Massachusetts: The MIT Press, 2011.
*
* Paul Levy (journalist), Levy, Paul. ''Moore: G.E. Moore and the Cambridge Apostles''. Weidenfeld & Nicolson, 1979.
* Luchte, James
"Under the Aspect of Time ("sub specie temporis"): Heidegger, Wittgenstein, and the Place of the Nothing" ''Philosophy Today'', Volume 53, Number 2 (Spring, 2009)
* Lurie, Yuval. ''Wittgenstein on the Human Spirit.''. Rodopi, 2012.
* Macarthur, David
"Working on Oneself in Philosophy and Architecture: A Perfectionist Reading of the Wittgenstein House".''Architectural Theory Review'', vol. 19, no. 2 (2014): 124–140.
* Jesús Padilla Gálvez, Padilla Gálvez, Jesús, ed. ''Wittgenstein, from a New Point of View''. Frankfurt am Main: Lang, 2003. .
* Padilla Gálvez, Jesús, ed. ''Philosophical Anthropology. Wittgenstein's Perspectives''. Berlin, Germany: Ontos Verlag, 2010. .
* David Pears, Pears, David F.]
"A Special Supplement: The Development of Wittgenstein's Philosophy" ''The New York Review of Books'', 10 July 1969.
* Pears, David F. ''The False Prison: A Study of the Development of Wittgenstein's Philosophy'', Volumes 1 and 2. Oxford University Press, 1987 and 1988.
*
* Perloff, Marjorie (2016). "Becoming a 'Different' Person: Wittgenstein's 'Gospels'", in Perloff, Marjorie, ''Edge of Irony: Modernism in the Shadow of the Habsburg Empire''. Chicago and London: The University of Chicago Press.
*
* George Pitcher (philosopher), Pitcher, George. ''The Philosophy of Wittgenstein''. Englewood Cliffs, N.J.: Prentice-Hall, Inc., 1964.
* Richter, Duncan J
"Ludwig Wittgenstein (1889–1951)" ''Internet Encyclopedia of Philosophy'', 30 August 2004. Retrieved 16 September 2010.
* Rizzo, Francesco
"Kauffman lettore di Wittgenstein" Università degli studi di Palermo, Palermo, 2017.
* Scheman, Naomi and O'Connor, Peg (eds.). ''Feminist Interpretations of Ludwig Wittgenstein''. Penn State Press, 2002.
* Schönbaumsfeld, Genia. ''A Confusion of the Spheres: Kierkegaard and Wittgenstein on Philosophy and Religion''. Oxford University Press, 2007.
*
* Shyam Wuppuluri, Newton da Costa, N. C. A. da Costa (eds.)
"''Wittgensteinian'' (adj.): Looking at the World from the Viewpoint of Wittgenstein's Philosophy"Springer – The Frontiers Collection, 2019. Foreword by A. C. Grayling.
* Temelini, Michael
''Wittgenstein and the Study of Politics'' Toronto: University of Toronto Press, 2015.
* Wall, Richard. ''Wittgenstein in Ireland''. London: Reaktion Books, Ltd. 2000.
* Wallgren, Thomas H., ed. (2024). ''The Creation of Wittgenstein: Understanding the Roles of Rush Rhees, Elizabeth Anscombe and Georg Henrik von Wright''. Bloomsbury Publishing.
*
* Xanthos, Nicolas
"Wittgenstein's Language Games" in Louis Hebert (dir.), ''Signo'' (online), Rimouski (Quebec, Canada), 2006.
Works referencing Wittgenstein
* E. L. Doctorow, Doctorow, E. L. ''City of God''. Plume, 2001, depicts an imaginary rivalry between Wittgenstein and Einstein.
* Apostolos Doxiadis, Doxiadis, Apostolos and Christos Papadimitriou, Papadimitriou, Christos. ''Logicomix''. Bloomsbury, 2009.
* Bruce Duffy, Duffy, Bruce. ''The World as I Found It''. Ticknor & Fields, 1987, a fictionalized account of Wittgenstein's life.
* Derek Jarman, Jarman, Derek. ''Wittgenstein (film), Wittgenstein'', a biopic of Wittgenstein with a script by Terry Eagleton, British Film Institute, 1993.
* Philip Kerr, Kerr, Philip. ''A Philosophical Investigation'', Chatto & Windus, 1992, a dystopian thriller set in 2012.
* David Markson, Markson, David. ''Wittgenstein's Mistress''. Dalkey Archive Press, 1988, an experimental novel, a first-person account of what it would be like to live in the world of the ''Tractatus''.
* Iris Murdoch, Murdoch, Iris. ''Nuns and Soldiers''
The first line of the novel is "'WITTGENSTEIN —'".London: Chatto & Windus, 1980.
* James Tully (philosopher), Tully, James. ''Strange Multiplicity: Constitutionalism in an Age of Diversity''. Cambridge: Cambridge University Press, 1995
* David Foster Wallace, Wallace, David Foster. ''The Broom of the System''. Penguin Books, 1987, a novel.
External links
*
*
C.K. Ogden's English translation of ''Tractatus Logico-Philosophicus'' (Gutenberg)*
*
Works by Ludwig Wittgenstein at The Ludwig Wittgenstein Project*
*
Trinity College Chapel*
BBC Radio 4 programme on Wittgenstein broadcast 13 December 2011
"A. J. Ayer's Critique of Wittgenstein's Private Language Argument"Wittgenstein BBC Radio 4 discussion with Ray Monk, Barry Smith & Marie McGinn (''In Our Time (radio series), In Our Time'', 4 December 2003)
*
''The Significance of Ontology in Epistemological Research''– Hannah Arendt Memorial Lecture, 1980
''Wittgenstein's Jet''BBC Radio 4 programme Broadcast Friday 2 January 2015
GB Patent GB191027087A: ''Improvements in Propellers applicable for Aerial Machines'', 1910Espacenet
*
{{DEFAULTSORT:Wittgenstein, Ludwig Josef Johann
Ludwig Wittgenstein,
1889 births
1951 deaths
20th-century Austrian philosophers
Alumni of Trinity College, Cambridge
Analytic philosophers
Austrian expatriates in the United Kingdom
Austrian logicians
Austrian people of Jewish descent
Austro-Hungarian military personnel of World War I
Bertrand Russell Professors of Philosophy
Cambridge University Moral Sciences Club
Deaths from prostate cancer in England
Fellows of Trinity College, Cambridge
Jewish philosophers
LGBTQ philosophers
Linguistic turn
Metaphilosophers
Naturalised citizens of the United Kingdom
Ordinary language philosophy
People associated with the University of Manchester
Austrian philosophers of language
Philosophers of logic
Philosophers of mathematics
Philosophers of psychology
Technische Universität Berlin alumni
Wittgenstein family, Ludwig
Wittgensteinian philosophers,
World War I prisoners of war held by Italy
Philosophers of religion