The Platonic corpus is a collection of texts written under Plato’s name. It is fairly inconvenient for us, modern readers, that it includes texts hardly authored by Plato, but we are normally able, or deem ourselves so, to tell the difference between spurious and authentic material. Yet that ‘either-or’ logic might be too simplistic to account for the specifics of ‘school accumulation’, which continued more or less till the end of the Hellenistic epoch and implied imitation rather than deception: the Platonic corpus was in the making as long as the Academy existed. And so were its...