Plato, Republic, book 5 750:

ἢ οὐ μνημονεύομεν ὅτι φωνάσ τε καὶ χρόασ καλὰσ καὶ τὰ τοιαῦτ’ ἔφαμεν τούτουσ φιλεῖν τε καὶ θεᾶσθαι, αὐτὸ δὲ τὸ καλὸν οὐδ’ ἀνέχεσθαι ὥσ τι ὄν;