Plato, Laws 635a

ἀπὼν τῆς τότε διανοίας τοῦ τιθέντος αὐτά, νῦν ἐπιεικῶς μοι δοκεῖς ἐστοχάσθαι καὶ σφόδρα ἀληθῆ λέγειν. οὐκοῦν ἡμῖν τὰ νῦν ἐρημία μὲν νέων, αὐτοὶ δʼ ἕνεκα γήρως ἀφείμεθʼ ὑπὸ τοῦ νομοθέτου διαλεγόμενοι περὶ αὐτῶν τούτων μόνοι πρὸς μόνους μηδὲν ἂν πλημμελεῖν; ἔστι ταῦτα οὕτως, εἰς ἃ καὶ μηδέν γε ἀνῇς ἐπιτιμῶν τοῖς νόμοις ἡμῶν· οὐ γὰρ τό γε γνῶναί τι τῶν μὴ καλῶν ἄτιμον, ἀλλὰ ἴασιν ἐξ αὐτοῦ συμβαίνει γίγνεσθαι

far away though you are from the original lawgiver, you have fairly spotted, as I think, his intention, and described it with perfect truth. Well, there are no young people with us now; so we may be permitted by the lawgiver, old as we are, to discuss these matters among ourselves privately without offence. That is so. Do you, then, have no scruple in censuring our laws; for there is nothing discreditable in being told of some flaw; rather it is just this which leads to a remedy, if the criticism be accepted not peevishly