Plato, Laws 686b

μέρους τοῦ περὶ τὸν ὑμέτερον τόπον, καὶ τοῦτο δὴ πρὸς τὰ δύο μέρη πολεμοῦν οὐ πώποτε πέπαυται μέχρι τὰ νῦν· ἐπεὶ γενομένη γε ἡ τότε διάνοια καὶ συμφωνήσασα εἰς ἕν, ἀνυπόστατον ἄν τινα δύναμιν ἔσχε κατὰ πόλεμον. πῶς γὰρ οὔ; πῶς οὖν καὶ πῇ διώλετο; ἆρʼ οὐκ ἄξιον ἐπισκοπεῖν τηλικοῦτον καὶ τοιοῦτον σύστημα ἥτις ποτὲ τύχη διέφθειρε; σχολῇ γὰρ οὖν δή τις ἂν ἄλλο σκοπῶν, ἢ νόμους

and ever since, up to the present day, this fraction has never ceased warring against the other two. For if the original intention had been realized, and if they had been in accord about their policy, it would have created a power invincible in war. It certainly would. How then, and by what means, was it destroyed? Is it not worth while to enquire by what stroke of fortune so grand a confederacy was wrecked? Yes for, if one passed over these examples,