Epictetus, Works, book 3, Περὶ τοῦ μὴ δεῖν προσπάσχειν τοῖσ οὐκ ἐφ’ ἡμῖν. 105:

μέγα γὰρ ἐπὶ πάντων τὸ "ᾔδειν θνητὸν γεγεννηκώσ". οὕτωσ γὰρ ἐρεῖσ καὶ ὅτι "ᾔδειν θνητὸσ ὤν", "ᾔδειν ἀποδημητικὸσ ὤν", "ᾔδειν ἔκβλητοσ ὤν" 3, "ᾔδειν εἰσ φυλακὴν ἀπότακτοσ ὤν". εἶτ’ ἂν ἐπιστρέφῃσ κατὰ σαυτὸν καὶ ζητήσῃσ τὴν χώραν, ἐξ ἧσ ἐστι τὸ συμβεβηκόσ, εὐθὺσ ἀναμνησθήσῃ, ὅτι "ἐκ τῆσ τῶν ἀπροαιρέτων, τῶν οὐκ ἐμῶν·