Karl Popper

Sir

Karl Popper

CH FRS FBA
Sir; Karl Popper; CH FRS FBA
	Popper in the 1980s
Born	Karl Raimund Popper; 28 July 1902; Vienna, Austria-Hungary
Died	17 September 1994 (aged 92); London, England
Citizenship	Austria; United Kingdom (from 1945);
Alma mater	University of Vienna (PhD, 1928)
Relatives	Josef Popper-Lynkeus (uncle)
Awards	Knight Bachelor (1965)
Era	20th-century philosophy
Region	Western philosophy
School	Analytic philosophy; Critical rationalism; Würzburg School; Metaphysical realism; Correspondence theory of truth; Interactionism; Liberalism;
Institutions	Canterbury University College; London School of Economics; King's College London; Darwin College, Cambridge;
Thesis	Zur Methodenfrage der Denkpsychologie (On Questions of Method in the Psychology of Thinking) (1928)
Doctoral advisor	Karl Ludwig Bühler; Moritz Schlick;
Doctoral students	Joseph Agassi; Charles Leonard Hamblin; A. I. Sabra;
Other notable students	Donald A. Gillies; John W. N. Watkins;
Main interests	Epistemology; Rationality; Philosophy of science; Logic; Social and political philosophy; Metaphysics; Philosophy of mind; Origin of life; Interpretations of quantum mechanics;
Notable ideas	See list Bold hypothesis; Critical rationalism; Falsifiability; Criticism of dogmatic/naive falsificationism; Demarcation problem; Evolutionary trial and error view of the growth of knowledge; Propensity interpretation; Open society; Popper's three worlds; Modified essentialism; Criticism of justificationism; Axiomatization of probability; Popper's experiment; Active Darwinism; Spearhead model of evolution; Criticism of psychoanalysis; Situational logic; Objective hermeneutics; The paradox of tolerance; Critical dualism (of facts and standards); Logic of scientific discovery; Experimental corroboration as an indicator of verisimilitude/truthlikeness; Basissatz (basic statement); The historicism–historism distinction; Negative utilitarianism; Popper's two senses of number statements; The "Myth of the Framework"; ;

Sir Karl Raimund Popper CH FRS FBA (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 classical inductivist views on the scientific method in favour of empirical falsification. According to Popper, a theory in the empirical sciences can never be proven, but it can be falsified, meaning that it can (and should) be scrutinised with decisive experiments. Popper was opposed to the classical justificationist account of knowledge, which he replaced with critical rationalism, namely "the first non-justificational philosophy of criticism in the history of philosophy".

In political discourse, he is known for his vigorous defence of liberal democracy and the principles of social criticism that he believed made a flourishing open society possible. His political philosophy embraced ideas from major democratic political ideologies, including libertarianism/classical liberalism, socialism/social democracy and conservatism, and attempted to reconcile them.

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