Plato, Laws 673c

ἐρόμενον σαφῶς, καὶ μανθάνω ὡς ἐρώτησις οὖσα αὕτη τὰ νῦν ἀπόκρισίς τέ ἐστιν, ὡς εἶπον, καὶ ἔτι πρόσταξις διαπεράνασθαι τὰ περὶ γυμναστικῆς. ἄρισθʼ ὑπέλαβές τε καὶ οὕτω δὴ ποίει. ποιητέον· οὐδὲ γὰρ πάνυ χαλεπόν ἐστιν εἰπεῖν ὑμῖν γε ἀμφοτέροις γνώριμα. πολὺ γὰρ ἐν ταύτῃ τῇ τέχνῃ πλέον ἐμπειρίας ἢ ἐν ἐκείνῃ μετέχετε. σχεδὸν ἀληθῆ λέγεις. οὐκοῦν αὖ ταύτης ἀρχὴ μὲν τῆς παιδιᾶς τὸ κατὰ

in putting this question; although it is a question, I understand it to be also (as I say) an answer—or rather, an actual injunction to give a full account of gymnastic. You have grasped my meaning excellently: please do so. Do it I must; and indeed it is no very hard task to speak of things well known to you both. For you are far better acquainted with this art than with the other. That is about true. The origin of the play we are speaking of