EN 1103b7-12 Virtue comes into being and is destroyed from and through the same things

ἔτι ἐκ τῶν αὐτῶν καὶ διὰ τῶν αὐτῶν καὶ γίνεται πᾶσα ἀρετὴ καὶ φθείρεται, ὁμοίως δὲ καὶ τέχνη· ἐκ γὰρ τοῦ κιθαρίζειν καὶ οἱ ἀγαθοὶ καὶ κακοὶ γίνονται κιθαρισταί. ἀνάλογον δὲ καὶ οἰκοδόμοι καὶ οἱ λοιποὶ πάντες· ἐκ μὲν γὰρ τοῦ εὖ οἰκοδομεῖν ἀγαθοὶ οἰκοδόμοι ἔσονται, ἐκ δὲ τοῦ κακῶς κακοί.