Plato, Laws 769e

καὶ ὁ κόσμος ἀεὶ γίγνηται περὶ τὴν ᾠκισμένην αὐτῷ πόλιν; εἰκός—πῶς γὰρ οὔ; —βούλεσθαι πάντα ὁντινοῦν τὸ τοιοῦτον. οὐκοῦν εἴ τίς τινα μηχανὴν ἔχοι πρὸς τοῦτο, ἔργῳ καὶ λόγοις τίνα τρόπον διδάξειεν ἂν ἕτερον εἴτε μείζονα εἴτε ἐλάττω περὶ τοῦτʼ ἔχειν ἔννοιαν, ὅπως χρὴ φυλάττειν καὶ ἐπανορθοῦν νόμους, οὐκ ἄν ποτε λέγων ἀπείποι τὸ τοιοῦτον πρὶν ἐπὶ τέλος ἐλθεῖν;

and never in any way worse. This, of course, is what everyone naturally desires. Suppose then that a man knew of a device indicating the way in which he could teach another man by deed and word to understand in a greater or less degree how he should conserve or amend laws, surely he would never cease declaring it until he had accomplished his purpose.