Plato, Laws 891a

τὰ περὶ νόμους προστάγματα ἐν γράμμασι τεθέντα, ὡς δώσοντα εἰς πάντα χρόνον ἔλεγχον, πάντως ἠρεμεῖ, ὥστε οὔτʼ εἰ χαλεπὰ κατʼ ἀρχὰς ἀκούειν ἐστὶν φοβητέον, ἅ γʼ ἔσται καὶ τῷ δυσμαθεῖ πολλάκις ἐπανιόντι σκοπεῖν, οὔτε εἰ μακρά, ὠφέλιμα δέ, διὰ ταῦτα λόγον οὐδαμῇ ἔχει οὐδὲ ὅσιον ἔμοιγε εἶναι φαίνεται τὸ μὴ οὐ βοηθεῖν τούτοις τοῖς λόγοις πάντα ἄνδρα κατὰ δύναμιν. ἄριστα, ὦ ξένε, δοκεῖ μοι λέγειν Κλεινίας.

since legal ordinances when put in writing remain wholly unchanged, as though ready to submit to examination for all time, so that one need have no fear even if they are hard to listen to at first, seeing that even the veriest dullard can come back frequently to examine them, nor yet if they are lengthy, provided that they are beneficial. Consequently, in my opinion, it could not possibly be either reasonable or pious for any man to refrain from lending his aid to such arguments to the best of his power. What Clinias says, Stranger, is, I think, most excellent.