Against the Physicists, Books IX-X of Against the Learned Section 219

τὸ γὰρ σῶμα τοῦ σώματος οὐκ ἂν εἴη αἴτιον, ἐπείπερ ἢ ἀγένητόν ἐστι τὸ τοιοῦτον σῶμα καθάπερ ἡ κατ Ἐπίκουρον ἄτομος, ἢ γενητὸν ὡς ἔθος, καὶ ἢ φανερὸν ὡς σίδηρος καὶ πῦρ, ἤ ἀφανὲς ὧς ἄτομος. ὅ τι δ’ ἂν ᾖ τούτων, οὐδὲν δύναται ποιεῖν.

For a body could not be the cause of a body, since such a body is either ungenerated, as is the atom according to Epicurus, or generated, as is commonly held, and is either evident, like iron and fire, or nonevident, like an atom. Whichever of these it is, it can produce nothing.

Un corps ne saurait être cause d’un corps, puisque ce corps est soit inengendré, comme l’atome selon Épicure, soit engendré, comme il est ordinaire ; et il est soit manifeste, comme le fer et le feu, soit non manifeste, comme l’atome. Quel qu’il soit parmi ces corps, aucun ne peut agir.