[821] Arius Didymus epit. phys. fr. 39 Diels (DG p. 471, 11). εἶναι δὲ ψυχὴν ἐν τῷ ὅλῳ φασίν, ὃ καλοῦσιν αἰθέρα καὶ ἀέρα, κύκλῳ περι⟨έχουσαν⟩ γῆν καὶ θάλασσαν καὶ ἐκ τούτων ἀναθυμιαθεῖσ⟨αν⟩· τὰς δὲ λοιπὰς ψυχὰς προσπεφυκέναι ταύτῃ, ὅσαι τε ἐν ζῴοις εἰσὶ καὶ ὅσαι ἐν τῷ περιέχοντι· διαμένειν γὰρ ἐκεῖ τὰς τῶν ἀποθανόντων ψυχάς. ἔνιοι δὲ τὴν μὲν τοῦ ὅλου ἀΐδιον, τὰς δὲ λοιπὰς συμμίγνυσθαι ἐπὶ τελευτῇ εἰς ἐκείνην. ἔχειν δὲ πᾶσαν ψυχὴν ἡγεμονικόν τι ἐν αὑτῇ, ὃ δὴ ζωὴ καὶ αἴσθησίς ἐστι καὶ ὁρμή.