Plato, Laws 798d

οὐδεὶς αὐτῶν φοβεῖται. τὰ μὲν οὖν ἄλλα ἐλάττω μεταβαλλόμενα κακὰ διεξεργάζοιτʼ ἄν, ὅσα περὶ σχήματα πάσχει τὸ τοιοῦτον· ὅσα δὲ περὶ τὰ τῶν ἠθῶν ἐπαίνου τε καὶ ψόγου πέρι πυκνὰ μεταπίπτει, πάντων, οἴομαι, μέγιστά τε καὶ πλείστης εὐλαβείας δεόμενα ἂν εἴη. πῶς γὰρ οὔ; τί οὖν; τοῖς ἔμπροσθεν λόγοις πιστεύομεν, οἷς ἐλέγομεν ὡς τὰ περὶ τοὺς ῥυθμοὺς καὶ πᾶσαν μουσικήν ἐστιν τρόπων μιμήματα βελτιόνων καὶ χειρόνων ἀνθρώπων;

to a State. The evil wrought by changes in outward forms would be of less importance; but frequent changes in matters involving moral approval and disapproval are, as I maintain, of extreme importance, and require the utmost caution. Most certainly. Well, then, do we still put our trust in those former statements of ours, in which we said that matters of rhythm and music generally are imitations of the manners of good