  And as many interpreters have seen, there may be much more to the ending than that. It may even be that, in the last two pages of the Theaetetus, we have seen hints of Plato’s own answer to the puzzle. Perhaps understanding has emerged from the last discussion, as wisdom did from 145d–e, as the key ingredient without which no true beliefs alone can even begin to look like they might count as knowledge. Perhaps it is only when we, the readers, understand this point—that epistemological success in the last resort depends on having epistemological virtue—that we begin not only to have true beliefs about what knowledge is, but to understand knowledge. 