Philosophical realism is usually not treated as a position of its own but as a stance towards other subject matters. Realism about a certain kind of thing (like
numbers or
morality
Morality () is the differentiation of intentions, decisions and actions between those that are distinguished as proper (right) and those that are improper (wrong). Morality can be a body of standards or principles derived from a code of cond ...
) is the thesis that this kind of thing has ''mind-independent existence'', i.e. that it is not just a mere appearance in the eye of the beholder. This includes a number of positions within
epistemology and
metaphysics
Metaphysics is the branch of philosophy that studies the fundamental nature of reality, the first principles of being, identity and change, space and time, causality, necessity, and possibility. It includes questions about the nature of conscio ...
which express that a given thing instead exists independently of
knowledge
Knowledge can be defined as awareness of facts or as practical skills, and may also refer to familiarity with objects or situations. Knowledge of facts, also called propositional knowledge, is often defined as true belief that is disti ...
,
thought
In their most common sense, the terms thought and thinking refer to conscious cognitive processes that can happen independently of sensory stimulation. Their most paradigmatic forms are judging, reasoning, concept formation, problem solving, a ...
, or
understanding. This can apply to items such as the
physical world, the
past and
future,
other minds, and the
self, though may also apply less directly to things such as
universals,
mathematical truths,
moral truths, and
thought
In their most common sense, the terms thought and thinking refer to conscious cognitive processes that can happen independently of sensory stimulation. Their most paradigmatic forms are judging, reasoning, concept formation, problem solving, a ...
itself. However, realism may also include various positions which instead
reject metaphysical treatments of reality entirely.
Realism can also be a view about the properties of reality in general, holding that reality exists independent of the
mind
The mind is the set of faculties responsible for all mental phenomena. Often the term is also identified with the phenomena themselves. These faculties include thought, imagination, memory, will, and sensation. They are responsible for various m ...
, as opposed to non-realist views (like some forms of
skepticism and
solipsism) which question the
certainty of anything beyond one's own mind. Philosophers who profess realism often claim that
truth consists in a
correspondence between cognitive representations and reality.
Realists tend to believe that whatever we believe now is only an approximation of reality but that the accuracy and fullness of understanding can be improved. In some contexts, realism is contrasted with
idealism
In philosophy, the term idealism identifies and describes metaphysics, metaphysical perspectives which assert that reality is indistinguishable and inseparable from perception and understanding; that reality is a mental construct closely con ...
. Today it is more usually contrasted with
anti-realism, for example in the
philosophy of science
Philosophy of science is a branch of philosophy concerned with the foundations, methods, and implications of science. The central questions of this study concern what qualifies as science, the reliability of scientific theories, and the ulti ...
.
The oldest use of the term "realism" appears in
medieval
In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire a ...
scholastic
Scholastic may refer to:
* a philosopher or theologian in the tradition of scholasticism
* ''Scholastic'' (Notre Dame publication)
* Scholastic Corporation, an American publishing company of educational materials
* Scholastic Building, in New Y ...
interpretations and adaptations of
ancient Greek philosophy.
Etymology
The term comes from
Late Latin
Late Latin ( la, Latinitas serior) is the scholarly name for the form of Literary Latin of late antiquity.Roberts (1996), p. 537. English dictionary definitions of Late Latin date this period from the , and continuing into the 7th century in the ...
''realis'' "real" and was first used in the abstract metaphysical sense by
Immanuel Kant in 1781 (''
CPR'' A 369).
Varieties
Metaphysical realism
Metaphysical realism maintains that "whatever exists does so, and has the properties and relations it does, independently of deriving its existence or nature from being thought of or experienced."
Naive or direct realism
Naive realism, also known as direct realism, is a
philosophy of mind rooted in a
common sense theory of
perception that claims that the
senses provide us with direct
awareness of the external world. In contrast, some forms of
idealism
In philosophy, the term idealism identifies and describes metaphysics, metaphysical perspectives which assert that reality is indistinguishable and inseparable from perception and understanding; that reality is a mental construct closely con ...
assert that no world exists apart from mind-dependent ideas and some forms of
skepticism say we cannot trust our senses. The naive realist view is that
objects have properties, such as texture, smell, taste and colour, that are usually
perceived absolutely correctly. We perceive them as they ''really'' are.
Immanent realism
Is the ontological understanding which holds that universals are
immanently real within particulars themselves, not in a separate realm, and not mere names. Most often associated with
Aristotle
Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical Greece, Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatet ...
and the
Aristotelian tradition.
Scientific realism
Scientific realism is, at the most general level, the view that the world described by science is the real world, as it is, independent of what we might take it to be. Within
philosophy of science
Philosophy of science is a branch of philosophy concerned with the foundations, methods, and implications of science. The central questions of this study concern what qualifies as science, the reliability of scientific theories, and the ulti ...
, it is often framed as an answer to the question "how is the success of science to be explained?" The debate over what the success of science involves centers primarily on the status of
unobservable entities apparently talked about by scientific
theories. Generally, those who are scientific realists assert that one can make reliable claims about unobservables (viz., that they have the same
ontological status) as observables.
Analytic philosophers generally have a commitment to scientific realism, in the sense of regarding the scientific method as a reliable guide to the nature of reality. The main alternative to scientific realism is
instrumentalism.
Scientific realism in physics
Realism in physics (especially
quantum mechanics
Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, q ...
) is the claim that the world is in some sense mind-independent: that even if the results of a possible measurement do not pre-exist the act of measurement, that does not require that they are the creation of the observer (contrary to the "
consciousness causes collapse
Consciousness, at its simplest, is sentience and awareness of internal and external existence. However, the lack of definitions has led to millennia of analyses, explanations and debates by philosophers, theologians, linguisticians, and scient ...
"
interpretation of quantum mechanics
An interpretation of quantum mechanics is an attempt to explain how the mathematical theory of quantum mechanics might correspond to experienced reality. Although quantum mechanics has held up to rigorous and extremely precise tests in an extrao ...
). That interpretation of quantum mechanics, on the other hand, states that the
wave function
A wave function in quantum physics is a mathematical description of the quantum state of an isolated quantum system. The wave function is a complex-valued probability amplitude, and the probabilities for the possible results of measurements m ...
is already the full description of reality. The different possible realities described by the wave function are equally true. The observer collapses the wave function into their own reality. One's reality can be mind-dependent under this interpretation of quantum mechanics.
Moral realism
Moral realism
Moral realism (also ethical realism) is the position that ethical sentence (linguistics), sentences express propositions that refer to objective features of the world (that is, features independent of subjective opinion), some of which may be true ...
is the position that ethical sentences express propositions that refer to objective features of the world.
Aesthetic realism
Aesthetic realism (not to be confused with Aesthetic Realism, the philosophy developed by
Eli Siegel, or
"realism" in the arts) is the view that there are mind-independent aesthetic facts.
History of metaphysical realism
Ancient Greek philosophy

In
ancient Greek philosophy,
realist doctrines about
universals were proposed by
Plato
Plato ( ; grc-gre, Πλάτων ; 428/427 or 424/423 – 348/347 BC) was a Greek philosopher born in Athens during the Classical period in Ancient Greece. He founded the Platonist school of thought and the Academy, the first institutio ...
and
Aristotle
Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical Greece, Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatet ...
.
[Realism – philosophy – Britannica.com]
/ref>
Platonic realism is realism regarding the existence of universals or abstract objects. As universals were considered by Plato to be ideal forms, this stance is confusingly also called Platonic idealism. This should not be confused with Idealism
In philosophy, the term idealism identifies and describes metaphysics, metaphysical perspectives which assert that reality is indistinguishable and inseparable from perception and understanding; that reality is a mental construct closely con ...
, as presented by philosophers such as George Berkeley: as Platonic abstractions are not spatial, temporal, or mental, they are not compatible with the latter Idealism's emphasis on mental existence. Plato's Forms include numbers and geometrical figures, making them a theory of mathematical realism; they also include the Form of the Good, making them in addition a theory of ethical realism.
Aristotelian realism is the view that the existence of universals is dependent on the particulars that exemplify them.
Medieval philosophy
Medieval realism developed out of debates over the problem of universals. Universals are terms or properties that can be applied to many things, such as "red", "beauty", "five", or "dog". Realism (also known as exaggerated realism) in this context, contrasted with conceptualism and nominalism, holds that such universals really exist, independently and somehow prior to the world. Moderate realism holds that they exist, but only insofar as they are instantiated in specific things; they do not exist ''separately'' from the specific thing. Conceptualism holds that they exist, but only in the mind, while nominalism holds that universals do not "exist" at all but are no more than words (''flatus vocis
Roscelin of Compiègne (), better known by his Latinized name Roscellinus Compendiensis or Rucelinus, was a French philosopher and theologian, often regarded as the founder of nominalism.
Biography
Roscellinus was born in Compiègne, France. ...
'') that describe specific objects.
Proponents of moderate realism included Thomas Aquinas, Bonaventure
Bonaventure ( ; it, Bonaventura ; la, Bonaventura de Balneoregio; 1221 – 15 July 1274), born Giovanni di Fidanza, was an Italian Catholic Franciscan, bishop, cardinal, scholastic theologian and philosopher.
The seventh Minister G ...
, and Duns Scotus (cf. Scotist realism
Scotistic realism (also Scotist realism or Scotist formalism) is the Scotist position on the problem of universals. It is a form of moderate realism, which is sometimes referred to as 'scholastic realism'. The position maintains that universals ...
).
Early modern philosophy
In early modern philosophy, Scottish Common Sense Realism was a school of philosophy
Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, Epistemology, knowledge, Ethics, values, Philosophy of mind, mind, and Philosophy of language, language. Such quest ...
that sought to defend naive realism against philosophical paradox and scepticism, arguing that matters of common sense are within the reach of common understanding and that common-sense beliefs even govern the lives and thoughts of those who hold non-commonsensical beliefs. It originated in the ideas of the most prominent members of the Scottish School of Common Sense, Thomas Reid, Adam Ferguson and Dugald Stewart, during the 18th century Scottish Enlightenment
The Scottish Enlightenment ( sco, Scots Enlichtenment, gd, Soillseachadh na h-Alba) was the period in 18th- and early-19th-century Scotland characterised by an outpouring of intellectual and scientific accomplishments. By the eighteenth century ...
and flourished in the late 18th and early 19th centuries in Scotland and America.
The roots of Scottish Common Sense Realism can be found in responses to such philosophers as John Locke
John Locke (; 29 August 1632 – 28 October 1704) was an English philosopher and physician, widely regarded as one of the most influential of Enlightenment thinkers and commonly known as the "father of liberalism". Considered one of ...
, George Berkeley, and David Hume. The approach was a response to the "ideal system" that began with Descartes' concept of the limitations of sense experience
Empirical evidence for a proposition is evidence, i.e. what supports or counters this proposition, that is constituted by or accessible to sense experience or experimental procedure. Empirical evidence is of central importance to the sciences an ...
and led Locke and Hume to a skepticism that called religion and the evidence of the senses equally into question. The common sense realists found skepticism to be absurd and so contrary to common experience that it had to be rejected. They taught that ordinary experiences provide intuitively certain assurance of the existence of the self, of real objects that could be seen and felt and of certain "first principles" upon which sound morality and religious beliefs could be established. Its basic principle was enunciated by its founder and greatest figure, Thomas Reid:
:If there are certain principles, as I think there are, which the constitution of our nature leads us to believe, and which we are under a necessity to take for granted in the common concerns of life, without being able to give a reason for them—these are what we call the principles of common sense; and what is manifestly contrary to them, is what we call absurd.
Late modern philosophy
In late modern philosophy, a notable school of thought advocating metaphysical realism was Austrian realism. Its members included Franz Brentano,[ Alexius Meinong,][ Vittorio Benussi,][ Ernst Mally, and early Edmund Husserl.][''Gestalt Theory: Official Journal of the Society for Gestalt Theory and Its Applications (GTA)'', 22, Steinkopff, 2000, p. 94: "Attention has varied between Continental Phenomenology (late Husserl, Merleau-Ponty) and Austrian Realism (Brentano, Meinong, Benussi, early Husserl)".] These thinkers stressed the objectivity of truth and its independence of the nature of those who judge it. (See also '' Graz School''.)
Dialectical materialism, a philosophy of nature based on the writings of late modern philosophers Karl Marx
Karl Heinrich Marx (; 5 May 1818 – 14 March 1883) was a German philosopher, economist, historian, sociologist, political theorist, journalist, critic of political economy, and socialist revolutionary. His best-known titles are the 1848 ...
and Friedrich Engels, is interpreted to be a form of ontological realism.
According to Michael Resnik, Gottlob Frege's work after 1891 can be interpreted as a contribution to realism.
Contemporary philosophy
In contemporary analytic philosophy
Analytic philosophy is a branch and tradition of philosophy using analysis, popular in the Western world and particularly the Anglosphere, which began around the turn of the 20th century in the contemporary era in the United Kingdom, United ...
, Bertrand Russell
Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British mathematician, philosopher, logician, and public intellectual. He had a considerable influence on mathematics, logic, set theory, linguistics, ar ...
,[Bertrand Russell, ''Philosophy of Logical Atomism'', Open Court, 1998 918] Ludwig Wittgenstein,[Ludwig Wittgenstein, ''Tractatus Logico-Philosophicus'', Routledge 2001 ]921
__NOTOC__
Year 921 ( CMXXI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.
Events
By place
Byzantine Empire
* March – Battle of Pegae: Bulgarian forces under ''kavhan'' (first ...
J. L. Austin,[Austin, J. L., 1950, "Truth", reprinted in ''Philosophical Papers'', 3rd ed., Oxford: Oxford University Press 1979, 117–33.] 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 ...
, and Gustav Bergmann espoused metaphysical realism. Hilary Putnam
Hilary Whitehall Putnam (; July 31, 1926 – March 13, 2016) was an American philosopher, mathematician, and computer scientist, and a major figure in analytic philosophy in the second half of the 20th century. He made significant contributions ...
initially espoused metaphysical realism, but he later embraced a form of anti-realism that he termed "internal realism
Hilary Whitehall Putnam (; July 31, 1926 – March 13, 2016) was an American philosopher, mathematician, and computer scientist, and a major figure in analytic philosophy in the second half of the 20th century. He made significant contributions ...
." Conceptualist realism (a view put forward by David Wiggins) is a form of realism, according to which our conceptual framework maps reality.
Speculative realism is a movement in contemporary Continental-inspired philosophy that defines itself loosely in its stance of metaphysical realism against the dominant forms of post-Kantian philosophy.
See also
* Anti-realism
* Critical realism
* Dialectical realism
Ian MacDougall Hacking (born February 18, 1936) is a Canadian philosopher specializing in the philosophy of science. Throughout his career, he has won numerous awards, such as the Killam Prize for the Humanities and the Balzan Prize, and been a ...
* Epistemological realism
* Extended modal realism
* Legal realism
* Modal realism
Modal realism is the view propounded by philosopher David Lewis that all possible worlds are real in the same way as is the actual world: they are "of a kind with this world of ours." It is based on the following tenets: possible worlds exist; p ...
* Objectivism
* Philosophy of social science
* Principle of bivalence
* Problem of future contingents
* Realism (disambiguation)
Realism, Realistic, or Realists may refer to:
In the arts
*Realism (arts), the general attempt to depict subjects truthfully in different forms of the arts
Arts movements related to realism include:
*Classical Realism
*Literary realism, a move ...
* Truth-value link realism
* Speculative realism
* Direct and indirect realism
Notes
References
*
External links
Miller, Alexander, "Realism", The Stanford Encyclopedia of Philosophy (SEP)
O'Brien, Daniel, "Objects of Perception", The Internet Encyclopedia of Philosophy (IEP)
Physics research paper in Nature
Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans ar ...
which gives negative experimental results for certain classes of realism in the sense of physics.
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