Plato, Laws 783b

σβεννύντων τὴν αὔξην τε καὶ ἐπιρροήν.παίδων δὲ δὴ γένεσιν μετὰ τοὺς γάμους θῶμεν, καὶ μετὰ γένεσιν τροφὴν καὶ παιδείαν· καὶ τάχʼ ἂν οὕτω προϊόντων τῶν λόγων ὅ τε νόμος ἡμῖν ἕκαστος περαίνοιτο εἰς τοὔμπροσθεν ἐπὶ συσσίτια ἡνίκα ἀφικόμεθα—τὰς τοιαύτας κοινωνίας εἴτε ἄρα γυναικῶν εἴτε ἀνδρῶν δεῖ μόνων γίγνεσθαι, προσμείξαντες αὐτοῖς ἐγγύθεν ἴσως μᾶλλον κατοψόμεθα—τά τε ἐπίπροσθεν αὐτῶν, ἔτι νῦν ὄντα ἀνομοθέτητα,

So let us place the subject of the production of children next after that of marriage, and after their production, their nurture and education. If our discourse proceeds on these lines, possibly each of our laws will attain completion, and when we come to the public meals, by approaching these at close quarters we shall probably discern more clearly whether such associations ought to be for men only, or for women as well; and thus we shall not only prescribe the preliminaries that are still without legal regulation, and place them as fences