Plato, Laws 664b

ἀλλʼ οὔ μοι φαίνεται πρός γε ταῦτα δύνασθαι ἡμῶν ἀμφισβητῆσαί ποτʼ ἂν οὐδέτερος. τὸ μετὰ τοῦτο τοίνυν ἐμὸν ἂν εἴη λέγειν. φημὶ γὰρ ἅπαντας δεῖν ἐπᾴδειν τρεῖς ὄντας τοὺς χοροὺς ἔτι νέαις οὔσαις ταῖς ψυχαῖς καὶ ἁπαλαῖς τῶν παίδων, τά τε ἄλλα καλὰ λέγοντας πάντα ὅσα διεληλύθαμέν τε καὶ ἔτι διέλθοιμεν ἄν, τὸ δὲ κεφάλαιον αὐτῶν τοῦτο ἔστω· τὸν αὐτὸν ἥδιστόν τε καὶ ἄριστον ὑπὸ θεῶν βίον λέγεσθαι φάσκοντες,

Neither of us, I think, could possibly argue against your view. Our next subject I must handle myself. I maintain that all the three choirs must enchant the souls of the children, while still young and tender, by rehearsing all the noble things which we have already recounted, or shall recount hereafter; and let this be the sum of them: in asserting that one and the same life is declared by the gods to be both most pleasant and most just, we shall not only be saying what is most true,