Plato, Letters 331d

καλῶς αὐτῷ φαίνοιτο πολιτεύεσθαι, εἰ μέλλοι μήτε ματαίως ἐρεῖν μήτε ἀποθανεῖσθαι λέγων, βίαν δὲ πατρίδι πολιτείας μεταβολῆς μὴ προσφέρειν, ὅταν ἄνευ φυγῆς καὶ σφαγῆς ἀνδρῶν μὴ δυνατὸν ᾖ γίγνεσθαι τὴν ἀρίστην, ἡσυχίαν δὲ ἄγοντα εὔχεσθαι τὰ ἀγαθὰ αὑτῷ τε καὶ τῇ πόλει.κατὰ δὴ τοῦτον τὸν τρόπον ἐγὼ ὑμῖν τʼ ἂν συμβουλεύοιμι, συνεβούλευον δὲ καὶ Διονυσίῳ μετὰ Δίωνος, ζῆν μὲν τὸ καθʼ ἡμέραν πρῶτον, ὅπως ἐγκρατὴς αὐτὸς αὑτοῦ ὅτι μάλιστα

he ought to speak, if so be that his speech is not likely to prove fruitless nor to cause his death ; but he ought not to apply violence to his fatherland in the form of a political revolution, whenever it is impossible to establish the best kind of polity without banishing and slaughtering citizens, but rather he ought to keep quiet and pray for what is good both for himself and for his State. This, then, is the way in which I would counsel you—even as Dion and I together used to counsel Dionysius that he should, in the first place, so order his daily life as