Plato, Letters 326a

δὴ καὶ περὶ τὴν πᾶσαν πολιτείαν, τοῦ δὲ πράττειν αὖ περιμένειν ἀεὶ καιρούς, τελευτῶντα δὲ νοῆσαι περὶ πασῶν τῶν νῦν πόλεων ὅτι κακῶς σύμπασαι πολιτεύονται—τὰ γὰρ τῶν νόμων αὐταῖς σχεδὸν ἀνιάτως ἔχοντά ἐστιν ἄνευ παρασκευῆς θαυμαστῆς τινος μετὰ τύχης—λέγειν τε ἠναγκάσθην, ἐπαινῶν τὴν ὀρθὴν φιλοσοφίαν, ὡς ἐκ ταύτης ἔστιν τά τε πολιτικὰ δίκαια καὶ τὰ τῶν ἰδιωτῶν πάντα κατιδεῖν· κακῶν οὖν οὐ

yet as regards political action I kept constantly waiting for an opportune moment; until, finally, looking at all the States which now exist, I perceived that one and all they are badly governed; for the state of their laws is such as to be almost incurable without some marvellous overhauling and good-luck to boot. So in my praise of the right philosophy I was compelled to declare that by it one is enabled to discern all forms of justice both political and individual. Wherefore the classes of mankind (I said) will have no cessation from evils until either the class of those