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Ivan Supek (8 April 1915 – 5 March 2007) was a
Croatia Croatia, officially the Republic of Croatia, is a country in Central Europe, Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herze ...
n
physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...
,
philosopher Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
,
writer A writer is a person who uses written words in different writing styles, genres and techniques to communicate ideas, to inspire feelings and emotions, or to entertain. Writers may develop different forms of writing such as novels, short sto ...
,
playwright A playwright or dramatist is a person who writes play (theatre), plays, which are a form of drama that primarily consists of dialogue between Character (arts), characters and is intended for Theatre, theatrical performance rather than just Readin ...
, peace activist and
humanist Humanism is a philosophical stance that emphasizes the individual and social potential, and agency of human beings, whom it considers the starting point for serious moral and philosophical inquiry. The meaning of the term "humanism" ha ...
.


Early years and education

Supek was born in
Zagreb Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city of Croatia. It is in the Northern Croatia, north of the country, along the Sava river, at the southern slopes of the ...
, Croatia (still nominally under
Austria-Hungary 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#Before World War I, Central Europe between 1867 and 1918. A military ...
). His father, Rudolf, a chimney sweeper and his mother Marija Šips were married in Đakovo in 1912. He later moved to Zagreb where during his high school days, he organized a local section of the Young Communist League of Yugoslavia at his school, and was a member of the League until the Hitler-Stalin Pact. On one occasion, he secretly smuggled a briefcase to a man in Vienna he later found to be
Josip Broz Tito Josip Broz ( sh-Cyrl, Јосип Броз, ; 7 May 1892 – 4 May 1980), commonly known as Tito ( ; , ), was a Yugoslavia, Yugoslav communist revolutionary and politician who served in various positions of national leadership from 1943 unti ...
. After finishing grammar school in
Zagreb Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city of Croatia. It is in the Northern Croatia, north of the country, along the Sava river, at the southern slopes of the ...
in 1934, he continued pursuing his education in
Vienna Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...
for a brief period, then moved to
Zürich Zurich (; ) is the list of cities in Switzerland, largest city in Switzerland and the capital of the canton of Zurich. It is in north-central Switzerland, at the northwestern tip of Lake Zurich. , the municipality had 448,664 inhabitants. The ...
studying
mathematics Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...
,
physics Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge whi ...
,
biology Biology is the scientific study of life and living organisms. It is a broad natural science that encompasses a wide range of fields and unifying principles that explain the structure, function, growth, History of life, origin, evolution, and ...
and
philosophy Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
. Increasingly interested in quantum physics and its philosophical consequences, he moved to
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 ...
where in 1940 he obtained his
PhD A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research. The name of the deg ...
in physics under
Werner Heisenberg Werner Karl Heisenberg (; ; 5 December 1901 – 1 February 1976) was a German theoretical physicist, one of the main pioneers of the theory of quantum mechanics and a principal scientist in the German nuclear program during World War II. He pub ...
. He worked on problems of
superconductivity Superconductivity is a set of physical properties observed in superconductors: materials where Electrical resistance and conductance, electrical resistance vanishes and Magnetic field, magnetic fields are expelled from the material. Unlike an ord ...
, but ultimately his doctoral dissertation was on electrical conductivity in metals in low temperatures. In March 1941 he was arrested by the
Gestapo The (, ), Syllabic abbreviation, abbreviated Gestapo (), was the official secret police of Nazi Germany and in German-occupied Europe. The force was created by Hermann Göring in 1933 by combining the various political police agencies of F ...
for being involved in antifascist activity and held in prison for many months. His professors, Heisenberg, Hund and von Weizsäcker intervened to release him from prison. Immediately after being released, instead of returning to Leipzig, he went back to
Independent State of Croatia The Independent State of Croatia (, NDH) was a World War II–era puppet state of Nazi Germany and Fascist Italy (1922–1943), Fascist Italy. It was established in parts of Axis occupation of Yugoslavia, occupied Yugoslavia on 10 April 1941, ...
and joined the
communist Communism () is a sociopolitical, philosophical, and economic ideology within the socialist movement, whose goal is the creation of a communist society, a socioeconomic order centered on common ownership of the means of production, di ...
antifascist Anti-fascism is a political movement in opposition to fascist ideologies, groups and individuals. Beginning in European countries in the 1920s, it was at its most significant shortly before and during World War II, where the Axis powers were op ...
Yugoslav Partisans The Yugoslav Partisans,Serbo-Croatian, Macedonian language, Macedonian, and Slovene language, Slovene: , officially the National Liberation Army and Partisan Detachments of Yugoslavia sh-Latn-Cyrl, Narodnooslobodilačka vojska i partizanski odr ...
movement. He would not return to physics research again, focusing on his philosophical and literary work.


Public activity

Supek was a proponent of total and unconditional nuclear disarmament, having already in 1944, fourteen months before the bombing of Hiroshima warned on the danger of misuse of atomic energy. In 1946 he became a professor of
theoretical physics Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict List of natural phenomena, natural phenomena. This is in contrast to experimental p ...
at the
University of Zagreb The University of Zagreb (, ) is a public university, public research university in Zagreb, Croatia. It is the largest Croatian university and one of the oldest continuously operating universities in Europe. The University of Zagreb and the Unive ...
. His main contribution to physics was the discovery of the differential equation for
electrical conductivity Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity in ...
at low temperatures. In 1950 he advocated the construction of the Ruđer Bošković institute in Zagreb and became one of its founders. He was excluded from it in 1958 due to his disagreement with the Yugoslav Federal Commission for Nuclear Energy and his unwillingness to participate in a project for building the atomic bomb (an idea
Josip Broz Tito Josip Broz ( sh-Cyrl, Јосип Броз, ; 7 May 1892 – 4 May 1980), commonly known as Tito ( ; , ), was a Yugoslavia, Yugoslav communist revolutionary and politician who served in various positions of national leadership from 1943 unti ...
himself did not like much, and which was subsequently abandoned). After that, he stopped active research in theoretical physics and continued researching philosophy and literature. In 1960 he was accepted into the Yugoslav Academy of Sciences and Arts (since 1991 the
Croatian Academy of Sciences and Arts The Croatian Academy of Sciences and Arts (; , HAZU) is the national academy of Croatia. HAZU was founded under the patronage of the Croatian bishop Josip Juraj Strossmayer under the name Yugoslav Academy of Sciences and Arts (, JAZU) since its ...
) of which he was president from 1991 to 1997, and in 1968 he became the rector of the University of Zagreb, serving two terms until 1972, during the turbulent times of the
Croatian Spring The Croatian Spring (), or Maspok, was a political conflict that took place from 1967 to 1971 in the Socialist Republic of Croatia, at the time part of the Socialist Federal Republic of Yugoslavia. As one of six republics comprising Yugoslavi ...
. In 1960 he founded the Institute for the Philosophy of Science and Peace, as a section of the Yugoslav Academy of Sciences and Arts. The Institute was also a center of the nuclear disarmament movement, the Pugwash Conference for Yugoslavia, of which he was one of the founders and a member of its Permanent Committee. In 1970 he initiated the establishing of the Interuniversity Centre in Dubrovnik (IUC). He was also one of the founders of the international organization World without the Bomb. After numerous disputes and arguments with the government he was interrupted in his public activity in 1971. Among other incidents, he was put on a "black list" because of his involvement in the Croatian Spring movement. In 1976 he signed the Dubrovnik-Philadelphia Statement, with Philip Noel-Baker, Ava Helen Pauling,
Linus Pauling Linus Carl Pauling ( ; February 28, 1901August 19, 1994) was an American chemist and peace activist. He published more than 1,200 papers and books, of which about 850 dealt with scientific topics. ''New Scientist'' called him one of the 20 gre ...
, Aurelio Peccei and Sophia Wadai. He participated at the Philadelphia Congress of World Unity in 1976. He formulated his famous ten humanistic principles, which were more or less repeated at every later peace summit and event. He also established the International League of Humanists.


Later years

Supek visited and lectured at numerous foreign
universities A university () is an educational institution, institution of tertiary education and research which awards academic degrees in several Discipline (academia), academic disciplines. ''University'' is derived from the Latin phrase , which roughly ...
. He retired in 1985, but ever since continued his
humanist Humanism is a philosophical stance that emphasizes the individual and social potential, and agency of human beings, whom it considers the starting point for serious moral and philosophical inquiry. The meaning of the term "humanism" ha ...
work. He founded a citizen association, ''Alijansa za treću Hrvatsku'' (Alliance for the third Croatia). He was a critic of
globalisation Globalization is the process of increasing interdependence and integration among the economies, markets, societies, and cultures of different countries worldwide. This is made possible by the reduction of barriers to international trade, th ...
and a proponent of the
global justice movement The global justice movement is a network of globalization, globalized social movements demanding global justice by opposing what is often known as the “Economic globalization, corporate globalization” and promoting equal distribution of econo ...
. In 2002 he was elected an honorary member of the Academy of Sciences and Arts of Bosnia and Herzegovina. Supek died on 5 March 2007, in his home in Zagreb, after a long illness. In 2007, shortly after his death, the X Gymnasium in Croatia's capital
Zagreb Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city of Croatia. It is in the Northern Croatia, north of the country, along the Sava river, at the southern slopes of the ...
was renamed in his honor. He is among 24 famous Croats to be inducted in the Croatian Walk Of Fame.


Controversy over Heisenberg – Bohr 1941 meeting

In one of his last interviews in March 2006 Supek spoke about the famous and controversial meeting between
Werner Heisenberg Werner Karl Heisenberg (; ; 5 December 1901 – 1 February 1976) was a German theoretical physicist, one of the main pioneers of the theory of quantum mechanics and a principal scientist in the German nuclear program during World War II. He pub ...
and
Niels Bohr Niels Henrik David Bohr (, ; ; 7 October 1885 – 18 November 1962) was a Danish theoretical physicist who made foundational contributions to understanding atomic structure and old quantum theory, quantum theory, for which he received the No ...
in
Copenhagen Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the ...
in September 1941. According to Supek, he was informed in confidence by Bohr's wife Margrethe about the meeting. In his interview, Supek claimed that the main figure of the meeting was neither Heisenberg nor Bohr but Carl Friedrich von Weizsäcker. "Heisenberg and von Weizsäcker came to Bohr in German army uniforms. Von Weizsäcker's idea, probably originating from his father who was Ribbentrop's deputy, was to persuade Bohr to mediate for peace between Great Britain and Germany." Although Margrethe allegedly thought Supek will never bring these details into public, Supek felt it was "his duty to announce these facts so that future generations can know the truth about the Heisenberg – Bohr meeting".


Disputes with president Tuđman

Supek had many disputes with the first president of independent Croatia,
Franjo Tuđman Franjo Tuđman (14 May 1922 – 10 December 1999) was a Croatian politician and historian who became the first president of Croatia, from 1990 until his death in 1999. He served following the Independence of Croatia, country's independe ...
. In a 1997 "open letter" which he also read on the national television and published in all the major dailies, president Tuđman accused Supek, then President of the Academy of Arts and Sciences, of supporting forces that allegedly plotted his assassination after Supek made public statements critical of presidential policies: he called for Tuđman to submit to public scrutiny his financial assets before and after the war. Supek had been a critic of Tuđman's political ''faux pas'' since Tuđman took office in 1990. Following the publication of the letter, Supek and his family suffered numerous death threats.


Literary works

Beside his scientific and humanist work, Supek wrote numerous novels and plays, with themes spanning from philosophy, science fiction to politics. His novel ' (translated to '' The Process of the Century'') is about the process against the physicist
Robert Oppenheimer J. Robert Oppenheimer (born Julius Robert Oppenheimer ; April 22, 1904 – February 18, 1967) was an American theoretical physicist who served as the director of the Manhattan Project's Los Alamos Laboratory during World War II. He is often ...
. A list of his works can be found on the Academy homepage. In 1966 he started a journal, ''Encyclopedia moderna''. In his numerous works, Supek developed a worldview in which the values of the freedom, responsibility, and democracy are integrated with his philosophical-scientific reflections.


Quotes

* About science and humanism in 1995: :"The diversity of the world cannot be overcome in a political system; whoever tried to do that only produced tyranny and misery. The richness of plurality and diversity will only be increased in the future. All the European and world organizations are not enough, and cannot be effective if not inspired by the universal spirit and consciousness nourished by science and art."


See also

*
List of peace activists This list of peace activists includes people who have proactively advocated Diplomacy, diplomatic, philosophical, and non-military resolution of major territorial or ideological disputes through nonviolent means and methods. Peace activists usua ...


References


External links


Obituary in ''Prolegomena'', April 2008Homepage at the Croatian Academy of Arts and Sciences

A March 2006 interview with professor Supek
(''
Jutarnji list () is a Croatian daily newspaper based in Zagreb. It was published on 6 April 1998 by EPH (Europapress holding, owned by Ninoslav Pavić), which eventually changed its name in Hanza Media after being bought by Marijan Hanžeković. The newspap ...
'')
Ruđer Bošković Institute, Zagreb
{{DEFAULTSORT:Supek, Ivan 1915 births 2007 deaths Physicians from Zagreb Academic staff of the University of Zagreb Croatian physicists Croatian dramatists and playwrights Croatian male novelists Croatian essayists Croatian male essayists Croatian pacifists Croatian agnostics 20th-century Croatian philosophers Croatian humanists Rectors of the University of Zagreb Members of the Croatian Academy of Sciences and Arts Members of the Academy of Sciences and Arts of Bosnia and Herzegovina 20th-century Croatian novelists 20th-century dramatists and playwrights 20th-century essayists 20th-century Croatian male writers