Plato, Laws 801a

ἡμῖν πάντῃ πάντως ὑπαρχέτω; ἢ μηδὲν ἐπανερωτῶ, τιθῶ δὲ τοῦτο οὕτως; παντάπασι μὲν οὖν τίθει· νικᾷ γὰρ πάσαισι ταῖς ψήφοις οὗτος ὁ νόμος. τίς δὴ μετʼ εὐφημίαν δεύτερος ἂν εἴη νόμος μουσικῆς; ἆρʼ οὐκ εὐχὰς εἶναι τοῖς θεοῖς οἷς θύομεν ἑκάστοτε; πῶς γὰρ οὔ; τρίτος δʼ οἶμαι νόμος, ὅτι γνόντας δεῖ τοὺς ποιητὰς ὡς εὐχαὶ παρὰ θεῶν αἰτήσεις εἰσίν, δεῖ δὴ τὸν νοῦν αὐτοὺς

altogether in all respects auspicious? Or shall I ordain that it shall be so, without further questioning? By all means ordain it so; for that is a law carried by a unanimous vote. What then, next to auspicious speech, should be the second law of music? Is it not that prayers should be made on each occasion to those gods to whom offering is made? Certainly. The third law, I suppose, will be this,—that the poets, knowing that prayers are requests addressed to gods, must take the utmost care lest unwittingly