Becoming god was an ideal of many ancient Greek philosophers, as was the life of reason, which they equated with divinity. This book argues that their rival accounts of this equation depended on their divergent attitudes toward time. Affirming it, Heraclitus developed a paradoxical style of reasoning--chiasmus--that was the activity of his becoming god. Denying it as contradictory, Parmenides sought to purify thinking of all contradiction, offering eternity to those who would follow him. Plato did, fusing this pure style of reasoning--consistency--with a Pythagorean...