Note 45 — Chapter VI · ANALYTICA PRIORA II.

Analyt. Prior. II. xxi. p. 67, b. 23: ἀλλ’ ἴσως ἐκεῖνο ψεῦδος, τὸ ὑπολαβεῖν τινὰ κακῷ εἶναι τὸ ἀγαθῷ εἶναι, εἰ μὴ κατὰ συμβεβηκός· πολλαχῶς γὰρ ἐγχωρεῖ τοῦθ’ ὑπολαμβάνειν. ἐπισκεπτέον δὲ τοῦτο βέλτιον. This distinction is illustrated by what we read in Plato, Republic, v. pp. 478-479. The impossibility of believing that one contrary is identical with its contrary, is maintained by Sokrates in Plato, Theætetus, p. 190, B-D, as a part of the long discussion respecting ψευδὴς δόξα: either there is no such thing as ψευδὴς δόξα, or a man may know, and not know, the same thing, ibid. p. 196 C. Aristotle has here tried to show in what sense this last-mentioned case is possible.