Plato, Laws 688c

οἱ γίγνεσθαι. σπουδάζοντα δʼ εἴ με τιθέναι βούλεσθε, τίθετε· πάνυ γὰρ οὖν προσδοκῶ νῦν ὑμᾶς εὑρήσειν, τῷ λόγῳ ἑπομένους ὃν ὀλίγον ἔμπροσθε προυθέμεθα, τῆς τῶν βασιλέων τε φθορᾶς καὶ ὅλου τοῦ διανοήματος οὐ δειλίαν οὖσαν τὴν αἰτίαν, οὐδʼ ὅτι τὰ περὶ τὸν πόλεμον οὐκ ἠπίσταντο ἄρχοντές τε καὶ οὓς προσῆκεν ἄρχεσθαι, τῇ λοιπῇ δὲ πάσῃ κακίᾳ διεφθαρμένα, καὶ μάλιστα τῇ περὶ τὰ μέγιστα τῶν

For I certainly expect that, as you follow the argument recently propounded, you will now discover that the cause of the ruin of those kingdoms, and of their whole design, was not cowardice or ignorance of warfare on the part either of the rulers or of those who should have been their subjects; but that what ruined them was badness of all other kinds, and especially ignorance concerning the greatest of human interests. That this was the course of events then, and is so still,