Plato's thumos and epithumia. Plato, curiously enough, makes no provision for the will, a neglect connected with his determinism. "Plato, following Socrates, is from first to last a thorough determinist: he always assumes that to know good is to do it: he never contemplates the case of a man looking away from the good that he knows, or failing to regard it steadily" (Political and Moral Essays, 249, 250).

Of God and His Creatures: 2.60