Philosophy - [Gr.,=love of wisdom], study of the ultimate reality, causes, and principles underlying being and thinking. It has many aspects and different manifestations according to the problems involved and the method of approach and emphasis used by the individual philosopher. This article deals with the nature and development of Western philosophical thought. Eastern philosophy, while founded in religion, contains rigorously developed systems; for these, see
Buddhism;
Confucianism;
Hinduism;
Islam;
Jainism;
Shinto;
Taoism;
Vedanta; and related articles.
Distinguishing Characteristics This search for truth began, in the Western world, when the Greeks first established (c.600 b.c.) inquiry independent of theological creeds. Philosophy is distinguished from theology in that philosophy rejects dogma and deals with speculation rather than faith. Philosophy differs from science in that both the natural and the social sciences base their theories wholly on established fact, whereas philosophy also covers areas of inquiry where no facts as such are available. Originally, science as such did not exist and philosophy covered the entire field, but as facts became available and tentative certainties emerged, the sciences broke away from metaphysical speculation to pursue their different aims. Thus physics was once in the realm of philosophy, and it was only in the early 20th cent. that psychology was established as a science apart from philosophy. However, many of the greatest philosophers were also scientists, and philosophy still considers the methods (as opposed to the materials) of science as its province. Branches Philosophy is traditionally divided into several branches.
Metaphysics inquires into the nature and ultimate significance of the universe.
Logic is concerned with the laws of valid reasoning.
Epistemology investigates the nature of knowledge and the process of knowing.
Ethics deals with problems of right conduct.
Aesthetics attempts to determine the nature of beauty and the criteria of artistic judgment. Within metaphysics a division is made according to fundamental principles. The three major positions are idealism, which maintains that what is real is in the form of thought rather than matter; materialism, which considers matter and the motion of matter as the universal reality; and dualism, which gives thought and matter equal status. Naturalism and positivism are forms of materialism. The History of Philosophy Historically, philosophy falls into three large periods: classical (Greek and Roman) philosophy, which was concerned with the ultimate nature of reality and the problem of virtue in a political context; medieval philosophy, which in the West is virtually inseparable from early Christian thought; and, beginning with the Renaissance, modern philosophy, whose main direction has been epistemology. Classical Philosophy The first Greek philosophers, the Milesian school in the early 6th cent. b.c., consisting of
Thales,
Anaximander, and
Anaximenes, were concerned with finding the one natural element underlying all nature and being. They were followed by
Heraclitus,
Pythagoras,
Parmenides,
Leucippus,
Empedocles,
Anaxagoras, and
Democritus, who took divergent paths in exploring the same problem. Socrates was the first to inquire also into social and political problems and was the first to use the dialectical method. His speculations were carried on by his pupil
Plato, and by Plato's pupil
Aristotle, at the Academy in Athens. Roman philosophy was based mainly on the later schools of Greek philosophy, such as the
Sophists, the
Cynics,
Stoicism, and
epicureanism. In late antiquity,
Neoplatonism, chiefly represented by
Plotinus, became the leading philosophical movement and profoundly affected the early development of Christian theology. Arab thinkers, notably
Avicenna and
Averroës, preserved Greek philosophy, especially Aristotelianism, during the period when these teachings were forgotten in Europe. The Middle Ages to the Nineteenth Century Scholasticism, the high achievement of medieval philosophy, was based on Aristotelian principles. St.
Thomas Aquinas was the foremost of the schoolmen, just as St.
Augustine was the earlier spokesman for the church of pure belief. The
Renaissance, with its new physics, astronomy, and humanism, revolutionized philosophic thought. René
Descartes is considered the founder of modern philosophy because of his attempt to give the new science a philosophic basis. The other great rationalist systems of the 17th cent., especially those of Baruch
Spinoza and G. W. von
Leibniz, were developed in response to problems raised by Cartesian philosophy and the new science. In England
empiricism prevailed in the work of Thomas
Hobbes, John
Locke, and David
Hume, as well as that of George
Berkeley, who was the outstanding idealist. The philosophy of Immanuel
Kant achieved a synthesis of the rationalist and empiricist traditions and was in turn developed in the direction of
idealism by J. G.
Fichte, F. W. J. von
Schelling, and G. W. F.
Hegel. The romantic movement of the 18th cent. had its beginnings in the philosophy of J. J.
Rousseau; its adherents of the 19th cent. included Arthur
Schopenhauer and Friedrich
Nietzsche, as well as the American transcendentalists represented by Ralph Waldo
Emerson. Opposed to the romanticists was the
dialectical materialism of Karl
Marx. The evolutionary theories of Charles
Darwin profoundly affected mid-19th-century thought. Ethical philosophy culminated in England in the
utilitarianism of John Stuart
Mill and in France in the
positivism of Auguste
Comte.
Pragmatism, the first essentially American philosophical movement, was founded at the end of the 19th cent. by C. S.
Peirce and was later elaborated by William
James and John
Dewey. The Twentieth Century The transition to 20th-century philosophy essentially came with Henri
Bergson. The century has often seen a great disparity in orientation between Continental and Anglo-American thinkers. In France and Germany, major philosophical movements have been the phenomenology of Edmund
Husserl and the existentialism of Martin
Heidegger and Jean-Paul
Sartre. Positivism and science have come under the scrutiny of Jürgen
Habermas of the
Frankfurt School; he has argued that they are driven by hidden interests.
Structuralism, a powerful intellectual movement throughout the first half of the 20th cent., defined language and social systems in terms of the relationships among their elements. Beginning in the 1960s arguments against all of Western metaphysics were marshaled by poststructuralists; among the most influential has been Jacques
Derrida, a wide-ranging philosopher who has pursued
deconstruction, a program that seeks to identify metaphysical assumptions in literature and psychology as well as philosophy. Both structuralism and poststructuralism originated mostly in France but soon came to influence thinkers throughout the West, especially in Germany and the United States. Major concerns in American and British philosophy in the 20th cent. have included formal logic, the
philosophy of science, and epistemology. Leading early figures included G. E.
Moore, Bertrand
Russell, and Ludwig
Wittgenstein; Anglo-American philosophy was later exemplified by logical positivists like Rudolph
Carnap. In their close attention to problems of language, the logical positivists, influenced by Wittgenstein, in turn influenced the work of W. V. O.
Quine and others in the philosophy of language. Later Anglo-American philosophers turned increasingly toward ethics and political philosophy, as in John
Rawls' work on the problem of justice. Bibliography See W. Windelband, A History of Philosophy (2d ed. 1901, repr. 1968); B. Russell, A History of Western Philosophy (rev. ed. 1961); W. K. C. Guthrie, A History of Greek Philosophy (3 vol., 1962–69); A. H. Armstrong, ed., The Cambridge History of Later Greek and Early Medieval Philosophy (1966); J. Passmore, A Hundred Years of Philosophy (2d ed. 1966) and Recent Philosophers (1985); A. Wedberg, A History of Philosophy (3 vol., 1982–84); F. Copleston, A History of Philosophy (9 vol., 1985); D. W. Hamlyn, A History of Western Philosophy (1987); R. Scruton, Modern Philosophy: An Introduction and Survey (1995); E. Craig, ed., Routledge Encyclopedia of Philosophy (1998); P. Hadot, What is Ancient Philosophy (tr. 2002). The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved. | 
