Plato, Letters 333d

ἐμὲ παρακαλοῦντας πρὸς τὰ νῦν πράγματα. ἦλθον Ἀθηναῖος ἀνὴρ ἐγώ, ἑταῖρος Δίωνος, σύμμαχος αὐτῷ, πρὸς τὸν τύραννον, ὅπως ἀντὶ πολέμου φιλίαν ποιήσαιμι· διαμαχόμενος δὲ τοῖς διαβάλλουσιν ἡττήθην. πείθοντος δὲ Διονυσίου τιμαῖς καὶ χρήμασιν γενέσθαι μετʼ αὐτοῦ ἐμὲ μάρτυρά τε καὶ φίλον πρὸς τὴν εὐπρέπειαν τῆς ἐκβολῆς τῆς Δίωνος αὐτῷ γίγνεσθαι, τούτων δὴ τὸ πᾶν διήμαρτεν. ὕστερον δὲ δὴ κατιὼν οἴκαδε

to the affairs of today ought to hear what then took place. I, a citizen of Athens, a companion of Dion, an ally of his own, went to the tyrant in order that I might bring about friendship instead of war; but in my struggle with the slanderers I was worsted. But when Dionysius tried to persuade me by means of honors and gifts of money to side with him so that I should bear witness, as his friend, to the propriety of his expulsion of Dion, in this design he failed utterly. And later on, while returning home from exile, Dion attached to himself two brothers from Athens,