Plato, Letters 322a

τοὺς γὰρ τῆς μοναρχίας λόγους οὐχ ἥκιστʼ αὐτὸν ἐλπίζω συνεξευρήσειν τῶν περὶ τὴν σὴν διατριβὴν ὄντων· εἰς ταῦτʼ οὖν αὐτῷ χρώμενος ὀνήσῃ τε αὐτὸς καὶ ἐκεῖνον πλεῖστα ὠφελήσεις. ἐὰν δέ τις ἀκούσας ταῦτα εἴπῃ· Πλάτων, ὡς ἔοικεν, προσποιεῖται μὲν τὰ δημοκρατίᾳ συμφέροντα εἰδέναι, ἐξὸν δʼ ἐν τῷ δήμῳ λέγειν καὶ συμβουλεύειν αὐτῷ τὰ βέλτιστα οὐ πώποτε ἀναστὰς ἐφθέγξατο, πρὸς ταῦτʼ εἰπεῖν ὅτι Πλάτων ὀψὲ ἐν τῇ πατρίδι γέγονεν καὶ τὸν δῆμον κατέλαβεν

as well as any of the persons you employ. So if you make use of him for this purpose you will not only benefit yourself but will also be helping him immensely. Suppose, however, that on hearing this someone were to say: Plato, as it seems, is claiming to know what is of advantage to democracy; yet when he has had it in his power to speak before the demos and to counsel it for the best he has never yet stood up and made a speech—to this you may reply that Plato was born late in the history of his country, and he found the demos