Note 64 — Chapter XII · DE ANIMÂ, ETC.

Ibid. III. ii. p. 425, b. 25: ἡ δὲ τοῦ αἰσθητοῦ ἐνέργεια καὶ τῆς αἰσθήσεως ἡ αὐτὴ μέν ἐστι καὶ μία, τὸ δ’ εἶναι οὐ ταὐτὸν αὐταῖς. — II. v. p. 418, a. 3: τὸ δ’ αἰσθητικὸν δυνάμει ἐστὶν οἷον τὸ αἰσθητὸν ἤδη ἐντελεχείᾳ, — πάσχει μὲν οὖν οὐχ ὅμοιον ὄν, πεπονθὸς δ’ ὡμοίωται καὶ ἔστιν οἷον ἐκεῖνο. Also p. 417, a. 7, 14, 20.

There were conflicting doctrines current in Aristotle’s time: some said that, for an agent to act upon a patient, there must be likeness between the two; others said that there must be unlikeness. Aristotle dissents from both, and adopts a sort of intermediate doctrine.