28:26

Aristotle on Substance

32:12

Plato on the Three Parts of the Soul

4:52

Essence and Existence (Aquinas 101)

36:35

Aristotle on Virtue

21:40

Locke's Empiricism

11:05

Aristotle's Theory of Causation

22:32

Aristotle’s Metaphysics: On Substance and Essence

27:52

Plato's Metaphysics