τῶν ὄντων τὰ μέν ἐστιν ἐφʼ ἡμῖν, τὰ δὲ οὐκ ἐφʼ ἡμῖν. ἐφʼ ἡμῖν μὲν ὑπόληψις, ὁρμή, ὄρεξις, ἔκκλισις καὶ ἑνὶ λόγῳ ὅσα ἡμέτερα ἔργα· οὐκ ἐφʼ ἡμῖν δὲ τὸ σῶμα, ἡ κτῆσις, δόξαι, ἀρχαὶ καὶ ἑνὶ λόγῳ ὅσα οὐχ ἡμέτερα ἔργα. καὶ τὰ μὲν ἐφʼ ἡμῖν ἐστι φύσει ἐλεύθερα, ἀκώλυτα, ἀπαραπόδιστα, τὰ δὲ οὐκ ἐφʼ ἡμῖν ἀσθενῆ, δοῦλα, κωλυτά, ἀλλότρια.