ANCIENT PHILOSOPHERS

• Early Greek Naturalists - THE IONIANS
• Early Greek Naturalists - THE PYTHAGOREANS
• Early Greek Naturalists - HERACLITUS
• Early Greek Naturalists - THE ELEATIC SCHOOL
• Early Greek Naturalists - THE PLURALISTS
• The Philosophy of the Sophists
• The Philosophy of Socrates
• The Philosophy of Plato
• The Philosophy of Aristotle
• The Philosophy of the Stoics
• The Philosophy of the Epicureans
• The Philosophy of Plotinus

MEDIEVAL PHILOSOPHERS

• The Philosophy of St. Augustine
• The Philosophy of St. Bonaventure
• The Philosophy of Thomas Aquinas
• The Philosophy of John Duns Scotus

The Philosophers of the Renaissance: Transition to Modern Philosophy

• The Philosophy of Nicholas of Cusa
• The Philosophy of Bernardino Telesio
• The Philosophy of Giordano Bruno
• The Philosophy of Tommaso Campanella
• The Renaissance: A New View of Politics, Physics and Nature.
• Niccolo Machiavelli
• Galileo Galilei

MODERN PHILOSOPHERS

• The Philosophy of René Descartes
• The Philosophy of Benedict Spinoza
• The Philosophy of Nicolas de Malebranche
• The Philosophy of G.W. von Leibnitz
• The Philosophy of Francis Bacon
• The Philosophy of Thomas Hobbes
• The Philosophy of John Locke
• The Philosophy of George Berkeley
• The Philosophy of David Hume
• The Period of the Enlightenment in France
• The Philosophy of Jean Jacques Rousseau
• The Philosophy of Immanuel Kant
• The Philosophy of J.G. Fichte
• The Philosophy of von Schelling & Schleiermacher
• The Philosophy of Georg Hegel
• The Philosophy of Arthur Schopenhauer
• The Philosophy of Rudolph Hermann Lotze
• The Philosophy of Antonio Rosmini-Serbati & Vincenzo Gioberti
• The Philosophy of the Positivists
• French Positivism
• English Positivism
• German Positivism
• Italian Positivism
• The Philosophy of Karl Marx & Friedrich Engels

RECENT PHILOSOPHERS

• The Philosophy of William James
• The Philosophy of John Dewey
• Philosophy of the Existentialists
• Soren Kierkegaard
• Karl Barth
• Friedrich Nietzsche
• Edmund Husserl
• Martin Heidegger
• Karl Jaspers
• Gabriel Marcel
• René Le Senne
• Louis Lavelle
• Jean-Paul Sartre
• The Philosophy of Alfred North Whitehead
• The Philosophy of Neo-Thomism: Etienne Gilson and Jacques Maritain