Plato, Laws 836a

γὰρ μὴ πλουτεῖν τε ἐξεῖναι ὑπερβαλλόντως ἀγαθὸν πρὸς τὸ σωφρονεῖν οὐ σμικρόν, καὶ πᾶσα ἡ παιδεία μετρίους πρὸς τὰ τοιαῦτʼ εἴληφεν νόμους, καὶ πρὸς τούτοις ἡ τῶν ἀρχόντων ὄψις διηναγκασμένη μὴ ἀποβλέπειν ἄλλοσε, τηρεῖν δʼ ἀεί, τοὺς νέους τʼ αὐτούς, πρὸς μὲν τὰς ἄλλας ἐπιθυμίας, ὅσα γε ἀνθρώπινα, μέτρον ἔχει—τὰ δὲ δὴ τῶν ἐρώτων παίδων τε ἀρρένων καὶ θηλειῶν καὶ γυναικῶν ἀνδρῶν

thus, for example, the proscription of excessive wealth is of no small benefit for promoting temperance, and the whole of our education-system contains laws useful for the same purpose; in addition to this, there is the watchful eye of the magistrates, trained to fix its gaze always on this point and to keep constant watch on the young people. These means, then, are sufficient (so far as any human means suffice) to deal with the other desires. But when we come to the amorous passions of children of both sexes and of men for women and women for men,—