Plato, Letters 326b

λήξειν τὰ ἀνθρώπινα γένη, πρὶν ἂν ἢ τὸ τῶν φιλοσοφούντων ὀρθῶς γε καὶ ἀληθῶς γένος εἰς ἀρχὰς ἔλθῃ τὰς πολιτικὰς ἢ τὸ τῶν δυναστευόντων ἐν ταῖς πόλεσιν ἔκ τινος μοίρας θείας ὄντως φιλοσοφήσῃ.ταύτην δὴ τὴν διάνοιαν ἔχων εἰς Ἰταλίαν τε καὶ Σικελίαν ἦλθον, ὅτε πρῶτον ἀφικόμην. ἐλθόντα δέ με ὁ ταύτῃ λεγόμενος αὖ βίος εὐδαίμων, Ἰταλιωτικῶν τε καὶ Συρακουσίων τραπεζῶν πλήρης, οὐδαμῇ οὐδαμῶς ἤρεσεν, δίς τε τῆς ἡμέρας ἐμπιμπλάμενον ζῆν καὶ μηδέποτε κοιμώμενον μόνον νύκτωρ,

who are right and true philosophers attains political supremacy, or else the class of those who hold power in the States becomes, by some dispensation of Heaven, really philosophic. This was the view I held when I came to Italy and Sicily, at the time of my first arrival. And when I came I was in no wise pleased at all with the blissful life, as it is there termed, replete as it is with Italian and Syracusan banquetings ; for thus one’s existence is spent in gorging food twice a day and never sleeping alone at night,