E.R. Dodds

“Against Socrates and Plato Nietzsche set ‘the Sophists.’ In a Basel lecture he had referred with approval to Grote’s defense of them (iv. 361 Mus.). But he later condemned Grote for representing them as ‘respectable men and models of morality’; on the contrary, ‘their glory was that they refused to cheat with big words and phrases,’ but ‘had the courage, which all strong spirits have, to recognize their own unmorality’ (Will to Power, 429). It seems evident that in this large generalization Nietzsche had in mind men of the stamp of Callicles or Thrasymachus. His words recall the passage where Socrates praises Callicles’ frankness in ‘saying plainly what others think but do not care to say’ (Gorg. 492d); and that Nietzsche in fact considered Callicles a spokesman for ‘the Sophists’ is made clear in his lectures on Plato (iv. 422 Mus.).”
― E.R. Dodds, The Greeks and the Irrational