Plato, Laws 671a

μηδέποτε ἱκανὸν ἐπῳδὸν γίγνεσθαι νέοις πρὸς ἀρετήν. καὶ ὅπερ ὁ λόγος ἐν ἀρχαῖς ἐβουλήθη, τὴν τῷ τοῦ Διονύσου χορῷ βοήθειαν ἐπιδεῖξαι καλῶς λεγομένην, εἰς δύναμιν εἴρηκεν· σκοπώμεθα δὴ εἰ τοῦθʼ οὕτω γέγονεν. θορυβώδης μέν που ὁ σύλλογος ὁ τοιοῦτος ἐξ ἀνάγκης προϊούσης τῆς πόσεως ἐπὶ μᾶλλον ἀεὶ συμβαίνει γιγνόμενος, ὅπερ ὑπεθέμεθα κατʼ ἀρχὰς ἀναγκαῖον εἶναι γίγνεσθαι περὶ τῶν νῦν

to enable them to determine what is first, what second in order of nobility; otherwise none of them will ever succeed in attracting the young to virtue by his incantations. The primary intention of our argument, which was to demonstrate that our defence of the Dionysiac chorus was justifiable, has now been carried out to the best of our ability. Let us consider if that is really so. Such a gathering inevitably tends, as the drinking proceeds, to grow ever more and more uproarious; and in the case of the present day gatherings that is, as we said at the outset,