ON ITS surface the Theaetetus ends inconclusively. It has even been said to end in failure. Yet this dialogue is exceptionally full of promise. The speakers are singularly well disposed. Two of them are gifted and resemble one another in looks and interests. Inquiry progresses splendidly through most of a long conversation. Although Theaetetus's first two definitions have to be given up, he is in the process led through a meticulous survey of cognition. These and other circumstances are too auspicious (...) for the termination of the dialogue to be taken at face value. The present essay is meant to disclose a partly hidden successful ending. The latter has to be discovered by readers. However the dialogue itself licenses and encourages active interpretation. The last ten pages of discourse contain so many specific clues that the text can be read as a single development ending in an affirmative conclusion. There is indeed a way to construe "true opinion with logos" so it applies to a cognition worthy of the name "epistémé.". (shrink)

THE PASSAGE CITED IN THE TITLE IS commonly said to deal with puzzles or paradoxes about size and other measurable attributes of bodies. Nearly all recent commentators seek to interpret this portion of the dialogue as supporting or otherwise cohering with the Protagorean position Socrates expounds in the Theaetetus. On the present analysis, however, the support or harmony is mere appearance. The puzzles Socrates brings up are indeed associated with entities rejected by Protagoras. Socrates certainly uses the puzzles to foster (...) Theaetetus's trust in Protagorean doctrine. All the same, Socrates' procedure should not be taken at face value. The passage, which is an important digression, is fundamentally quite critical of the Protagorean position. (shrink)