Plato, Laws 710d

ταὐτὸν ἀγαγεῖν αὐτῷ· γενομένου γὰρ τούτου, πάντα σχεδὸν ἀπείργασται τῷ θεῷ, ἅπερ ὅταν βουληθῇ διαφερόντως εὖ πρᾶξαί τινα πόλιν. δεύτερον δέ, ἐάν ποτέ τινες δύο ἄρχοντες γίγνωνται τοιοῦτοι, τρίτον δʼ αὖ καὶ κατὰ λόγον ὡσαύτως χαλεπώτερον ὅσῳ πλείους, ὅσῳ δʼ ἐναντίον, ἐναντίως. ἐκ τυραννίδος ἀρίστην φῂς γενέσθαι πόλιν ἄν, ὡς φαίνῃ, μετὰ νομοθέτου γε ἄκρου καὶ τυράννου κοσμίου, καὶ ῥᾷστά τε καὶ τάχιστʼ ἂν μεταβαλεῖν εἰς τοῦτο ἐκ τοῦ τοιούτου,

the two of them should meet; for if this were so, then God would have done nearly everything that he does when he desires that a State should be eminently prosperous. The second best condition is that there should arise two such rulers; then comes the third best, with three rulers; and so on, the difficulty increasing in proportion as the number becomes greater, and vice versa. You mean, apparently, that the best State would arise from a monarchy, when it has a first-rate lawgiver and a virtuous monarch, and these are the conditions under which the change into such a State could be effected most easily and quickly; and, next to this, from an oligarchy—