Plato, Laws 772d

τὰς ἀρχὰς χρὴ συμβούλους, πάντα δὲ τὸν δῆμον καὶ πάσας θεῶν μαντείας ἐπελθόντας, ἐὰν συμφωνῶσι πάντες, οὕτω κινεῖν, ἄλλως δὲ μηδέποτε μηδαμῶς, ἀλλὰ τὸν κωλύοντα ἀεὶ κατὰ νόμον κρατεῖν.ὁπότε τις οὖν καὶ ὁπηνίκα τῶν πέντε καὶ εἴκοσι γεγονότων ἔτη, σκοπῶν καὶ σκοπούμενος ὑπʼ ἄλλων, κατὰ νοῦν ἑαυτῷ καὶ πρέποντα εἰς παίδων κοινωνίαν καὶ γένεσιν ἐξηυρηκέναι

has arisen, all the people must be consulted, as well as all the officials, and they must seek advice from all the divine oracles; and if there is a general consent by all, then they may make a change, but under no other conditions at any time; and the objector to change shall always prevail according to law. When any man of twenty-five years of age, viewing and being viewed by others, believes that he has found in any quarter a mate to his liking and suitable for the joint procreation of children, he shall marry, in every case before he is thirty-five;