Synopsis: A chronological examination of the central Western philosphers, covering: Pythagoras; Heraclitus; Parmenides and Zeno; Empedocles; Anaxagoras; Socrates; Plato; Aristotle; St. Augustine; Thomas Aquinas; Duns Scotus; Hobbes; Descartes; Spinoza; Liebniz; Locke; George Berkeley; Hume; Kant