Note 46 — Chapter XX · LYSIS.

This is attested by Aristotle, Eth. Nik. i. 64, p. 1096, a. 16. Οἱ δὲ κομίσαντες τὴν δόξαν ταύτην, οὐκ ἐποίουν ἰδέας ἐν οἷς τὸ πρότερον καὶ τὸ ὕστερον ἔλεγον· διόπερ οὐδὲ τῶν ἀριθμῶν ἰδέαν κατεσκεύαζον: compare Ethic. Eudem. i. 8, 1218, a. 2. He goes on to object that Plato, having laid this down as a general principle, departed from it in recognizing an ἰδέαν ἀγαθοῦ, because τἀγαθὸν was predicated in all the categories, in that of οὐσία as well as in that of πρός τι — τὸ δὲ καθ’ αὑτὸ καὶ ἡ οὐσία πρότερον τῇ φύσει τοῦ πρός τι — ὥστε οὐκ ἂν εἴη κοινή τις ἐπὶ τούτων ἰδέα.