Plato, Letters 346d

λαβὼν τὰ χρήματα ταῦτα· καὶ δίων εὖ οἶδʼ ὅτι πολλὴν χάριν ἕξει σοι διαπραξαμένῳ ταῦτα ὑπὲρ ἐκείνου. τοῦτον δὴ ἐγὼ τὸν λόγον ἀκούσας ἐδυσχέραινον μέν, ὅμως δὲ βουλευσάμενος ἔφην εἰς τὴν ὑστεραίαν αὐτῷ περὶ τούτων τὰ δόξαντα ἀπαγγελεῖν. ταῦτα συνεθέμεθα τότε. ἐβουλευόμην δὴ τὸ μετὰ ταῦτα κατʼ ἐμαυτὸν γενόμενος, μάλα συγκεχυμένος· πρῶτος δʼ ἦν μοι τῆς βουλῆς ἡγούμενος ὅδε

will be most grateful to you for having effected this arrangement on his behalf. And I, when I heard this speech, was annoyed, but none the less I replied that I would think it over and let him know next day my decision about the matter; and to this we both then agreed. So after this, when I was by myself, I was thinking it over, very much perturbed. And in my deliberation the first and foremost reflection was this— Come now, suppose that Dionysius has no intention of performing any