Logic IV 125
in order to understand at all what knowledge is he ought to have resolved the difficult question which the logicians of our own day not completely mastered of the naure of judgement. But this he utterly fails to do. For one moment we think his is going to get his wheels on the track when he says that thought is a talking of a man to himself but he runs over the rails obligely and fails to see how that consideration might smooth the road for him. If there is in the whole dialogue a single thought of any use to a modern student of the subject it would require a closer study of the dialogue than I have given to it to bring it to light. the stylometic evidence is conjunction with the general facts of Plato's life renders it as we may say certain that the Theaetetus was written not far from the time of Plato's second visit to Syracuse in 367 BC Zutoslawski thinks is a little later. I did think previuos to closer inquiry.
EN