Plato, Laws 802b

πολιτείᾳ τὸ πρέπον καὶ ἁρμόττον· δοκιμαστὰς δὲ τούτων ἑλομένους τὴν ἐκλογὴν ποιεῖσθαι μὴ νεωτέρους πεντήκοντα ἐτῶν, καὶ ὅτι μὲν ἂν ἱκανὸν εἶναι δόξῃ τῶν παλαιῶν ποιημάτων, ἐγκρίνειν, ὅτι δʼ ἂν ἐνδεὲς ἢ τὸ παράπαν ἀνεπιτήδειον, τὸ μὲν ἀποβάλλεσθαι παντάπασιν, τὸ δʼ ἐπανερόμενον ἐπιρρυθμίζειν, ποιητικοὺς ἅμα καὶ μουσικοὺς ἄνδρας παραλαβόντας, χρωμένους αὐτῶν ταῖς δυνάμεσιν τῆς ποιήσεως,

To examine these and make the selection, we shall choose out men not under fifty years of age; and whichever of the ancient songs are approved we shall adopt, but whichever fail to reach our standard, or are altogether unsuitable, we shall either reject entirely or revise and remodel. For this purpose we shall call in the advice of poets and musicians, and make use of their poetical ability, without, however, trusting to their tastes or their wishes,