Plato, Laws 813d

ἐμφρόνως καὶ γιγνώσκων τῆς ἀρχῆς τὸ μέγεθος, λογισμῷ τε συνὼν ὡς εὖ μὲν τραφέντων καὶ τρεφομένων τῶν νέων πάντα ἡμῖν κατʼ ὀρθὸν πλεῖ, μὴ δέ—οὔτʼ εἰπεῖν ἄξιον οὔθʼ ἡμεῖς λέγομεν ἐπὶ καινῇ πόλει τοὺς σφόδρα φιλομαντευτὰς σεβόμενοι. πολλὰ μὲν οὖν ἡμῖν καὶ περὶ τούτων εἴρηται, τῶν περὶ τὰς ὀρχήσεις καὶ περὶ πᾶσαν τὴν τῶν γυμνασίων κίνησιν· γυμνάσια γὰρ τίθεμεν καὶ τὰ περὶ τὸν πόλεμον ἅπαντα τοῖς σώμασι διαπονήματα τοξικῆς τε καὶ πάσης

to make no blunder in these matters, recognizing the greatness of his office and wisely holding it in high respect, and holding also the rational conviction that, when the young have been, and are being, well brought up, all goes swimmingly, but otherwise—the consequences are such as it is wrong to speak of, nor will we mention them, in dealing with a new State, out of consideration for the over-superstitious. Concerning these matters also, which relate to dancing and gymnastic movements, we have already spoken at length. We are establishing gymnasia and all physical exercises connected with military training,—the use of the bow and all kinds of missiles, light skirmishing and heavy-armed fighting of every description,