Plato, Laws 690e

οὖσαν θαυμαστὴν ἐν τῷ τότε χρόνῳ, διέφθειραν. ἆρʼ οὐκ ἀγνοήσαντες τὸν Ἡσίοδον ὀρθότατα λέγοντα ὡς τὸ ἥμισυ τοῦ παντὸς πολλάκις ἐστὶ πλέον; ὁπόταν ᾖ τὸ μὲν ὅλον λαμβάνειν ζημιῶδες, τὸ δʼ ἥμισυ μέτριον, τότε τὸ μέτριον τοῦ ἀμέτρου πλέον ἡγήσατο, ἄμεινον ὂν χείρονος. ὀρθότατά γε. πότερον οὖν οἰόμεθα περὶ βασιλέας τοῦτʼ ἐγγιγνόμενον ἑκάστοτε διαφθείρειν πρότερον, ἢ ἐν τοῖσιν δήμοις;

splendid as it was at that epoch. Was it not through ignorance of that most true saying of Hesiod that oftimes the half is greater than the whole? Most true, indeed. Is it our view, then, that this causes ruin when it is found in kings rather than when found in peoples?