At head of title: Bertrand Russell.

"Originally designed and partly delivered as lectures at the Barnes foundation in Pennsylvania."--Pref.

--ANCIENT PHILOSOPHY-- The Rise of Greek Civilization -- The Milesian School -- Pythagoras -- Heraclitus -- Parmenides -- Empedocles -- Athens in Relation to Culture -- Anaxagoras -- The Atomists -- Protagoras -- Socrates -- The Influence of Sparta -- The Sources of Plato's Opinions -- Plato's Utopia -- The Theory of Ideas -- Plato's Theory of Immortality -- Plato's Cosmogony -- Knowledge and Perception in Plato -- Aristotle's Metaphysics -- Aristotle's Ethics -- Aristotle's Politics -- Aristotle's Logic -- Aristotle's Physics -- Early Greek Mathematics and Astronomy -- The Hellenistic World -- Cynics and Sceptics -- The Epicureans -- Stoicism -- The Roman Empire in Relation to Culture -- Plotinus -- CATHOLIC PHILOSOPHY -- The Religious Development of the Jews -- Christianity During the First Four Centuries -- Three Doctors of the Church -- Saint Augustine's Philosophy and Theology -- The Fifth and Sixth Centuries -- Saint Benedict and Gregory the Great -- The Papacy in the Dark Ages -- John the Scot -- Ecclesiastical Reform in the Eleventh Century -- Mohammedan Culture and Philosophy -- The Twelfth Century -- The Thirteenth Century -- Saint Thomas Aquinas -- Franciscan Schoolmen -- The Eclipse of the Papacy -- MODERN PHILOSOPHY -- General Characteristics -- The Italian Renaissance -- Machiavelli -- Erasmus and More -- The Reformation and CounterReformation -- The Rise of Science -- Francis Bacon -- Hobbes's Leviathan -- Descartes -- Spinoza -- Leibniz -- Philosophical Liberalism -- Locke's Theory of Knowledge -- Locke's Political Philosophy -- Locke's Influence -- Berkeley -- Hume -- The Romantic Movement -- Rousseau -- Kant -- Currents of Thought in the Nineteenth Century -- Hegel -- Byron -- Schopenhauer -- Nietzsche -- The Utilitarians -- Karl Marx -- Bergson -- William James -- John Dewey -- The Philosophy of Logical Analysis --

Book 1. Ancient philosophy: pt. 1. The pre-Socratics -- pt. 2. Socrates, Plato, and Aristotle -- pt. 3. Ancient philosophy after Aristotle -- Book 2. Catholic philosophy: pt. 1. The Fathers -- pt. 2. The schoolmen -- Book 3. Modern philosophy: pt. 1. From the Renaissance to Hume -- pt. 2. From Rousseau to the present day.