Plato, Euthydemus, Protagoras, Gorgias, Meno, Εὐθύδημος 405:

ἆρ’ οὖν, ἔφη, ταῦτα ἡγῇ σὰ εἶναι, ὧν ἂν ἄρξῃσ καὶ ἐξῇ σοι αὐτοῖσ χρῆσθαι ὅτι ἂν βούλῃ;