 But (1) plainly echoes material in Plato’s Philebus (see esp. 53c–55a). And that leads to the interesting suggestion that in that dialogue Plato is entering the dispute between Eudoxus and Speusippus. It has been suggested independently of that passage that Speusippus is lurking behind the ‘harsh thinkers’, the anti-hedonists, of 44a-47b (Schofield 1971, Dillon 1996).