Plato, Letters 350c

οἰκείοις καὶ φίλοις παρασκευάζεσθαι τιμωρεῖσθαι Διονύσιον, ἡμᾶς μὲν ξεναπατίας χάριν—οὕτω γὰρ ἔλεγέν τε καὶ ἐνόει— αὐτὸν δʼ ἐκβολῆς ἀδίκου καὶ φυγῆς. ἀκούσας δʼ ἐγὼ τοὺς μὲν φίλους παρακαλεῖν αὐτὸν ἐκέλευον, εἰ βούλοιντο· ἐμὲ δʼ εἶπον ὅτι σὺ μετὰ τῶν ἄλλων βίᾳ τινὰ τρόπον σύσσιτον καὶ συνέστιον καὶ κοινωνὸν ἱερῶν Διονυσίῳ ἐποίησας, ὃς ἴσως ἡγεῖτο διαβαλλόντων πολλῶν ἐπιβουλεύειν ἐμὲ μετὰ σοῦ ἑαυτῷ καὶ τῇ τυραννίδι, καὶ ὅμως οὐκ ἀπέκτεινεν,

friends to prepare at once to take vengeance on Dionysius,—we on account of his treachery to guests (for that was what Dion said and meant) , and he himself on account of his wrongful expulsion and banishment. And I, when I heard this, bade him summon my friends to his aid, should they be willing— But as for me, I said, it was you yourself, with the others, who by main force, so to say, made me an associate of Dionysius at table and at hearth and a partaker in his holy rites; and he, though he probably believed that I, as many slanderers asserted, was conspiring with you against himself and his throne, yet refrained from killing me,