Plato, Laws 655c

ὁμοίως χαίρομεν, ἢ πολλοῦ δεῖ; τοῦ παντὸς μὲν οὖν. τί ποτʼ ἂν οὖν λέγομεν τὸ πεπλανηκὸς ἡμᾶς εἶναι; πότερον οὐ ταὐτά ἐστι καλὰ ἡμῖν πᾶσιν, ἢ τὰ μὲν αὐτά, ἀλλʼ οὐ δοκεῖ ταὐτὰ εἶναι; οὐ γάρ που ἐρεῖ γέ τις ὥς ποτε τὰ τῆς κακίας ἢ ἀρετῆς καλλίονα χορεύματα, οὐδʼ ὡς αὐτὸς μὲν χαίρει τοῖς τῆς μοχθηρίας σχήμασιν, οἱ δʼ ἄλλοι ἐναντίᾳ ταύτης Μούσῃ τινί· καίτοι λέγουσίν γε οἱ πλεῖστοι μουσικῆς

in choral dancing, or far from equally? Very far indeed. Then what are we to suppose it is that misleads us? Is it the fact that we do not all regard as good the same things, or is it that, although they are the same, they are thought not to be the same? For surely no one will maintain that the choric performance of vice are better than those of virtue, or that he himself enjoys the postures of turpitude, while all others delight in music of the opposite kind. Most people, however, assert that the value of music consists in its power