Plato, Epinomis 983d

σφόδρʼ ἀναλαβεῖν χρή, πότερον ἔχει λόγον ὁ λόγος ἢ πάντως ὑστερεῖ, τὸ πρῶτον μὲν τὰ ὄντα εἶναι δύο, τὸ μὲν ψυχήν, τὸ δὲ σῶμα, καὶ πολλὰ ἑκατέρου, πάντα δὲ ἀλλήλων ἄλλα καὶ ἑκάτερα ἑκατέρων, καὶ τρίτον ἄλλο οὐδὲν κοινὸν οὐδενί, διαφέρειν δὲ ψυχὴν σώματος. ἔμφρον μέν που, τὸ δὲ ἄφρον θήσομεν, ἄρχον δέ, τὸ δὲ ἀρχόμενον, καὶ τὸ μὲν αἴτιον ἁπάντων, τὸ δὲ ἀναίτιον πάσης πάθης· ὥστε τά γε δὴ κατʼ

our statement is reasonable or is utterly at fault—namely, in the first place, that existence is of two kinds, the one soul, and the other body, and that many things are in either, though all are different from each other and those of the one kind from those of the other, and that there is no other third thing common to any of them; but soul differs from body. Intelligent, of course, we shall hold it to be, and the other unintelligent; the one governs, the other is governed; and the one is cause of all things, while the other is incapable of causing any of its experiences: so that to assert that the heavenly bodies