Plato, Laws 841a

τίνα δὴ συμβουλεύεις αὐτοῖς τίθεσθαι νόμον, ἐὰν ὁ νῦν τιθέμενος αὐτοὺς ἐκφύγῃ; δῆλον ὅτι τὸν ἐχόμενον τούτου δεύτερον, ὦ Κλεινία. τίνα λέγεις; ἀγύμναστον ὅτι μάλιστα ποιεῖν τὴν τῶν ἡδονῶν ῥώμην ἦν, τὴν ἐπίχυσιν καὶ τροφὴν αὐτῆς διὰ πόνων ἄλλοσε τρέποντα τοῦ σώματος. εἴη δʼ ἂν τοῦτο, εἰ ἀναίδεια μὴ ἐνείη τῇ τῶν ἀφροδισίων χρήσει· σπανίῳ γὰρ αὖ τῷ τοιούτῳ

What law do you recommend them to make if that which is now proposed slips out of their grasp? Evidently that law which comes next to it as second. What is that? One ought to put the force of pleasures as far as possible out of gear, by diverting its increase and nutriment to another part of the body by means of exercise. This would come about if indulgence in sexual intercourse were devoid of shamelessness; for if, owing to shame, people indulged in it but seldom,