In this paper, I argue that in the “Great Speech” of the Protagoras, Plato investigates the consequences of a view of history as progress away from nature, as expressed in Protagoras’ account of humanity’s origin and development. Socrates’ hedonistic calculus, in the dialogue’s second half, confronts Protagoras with the full implications of his view - showing how, absent a doctrine of natural human perfections, progress necessarily devours its own tail.

Ancient Philosophy | History of Philosophy