Plato, Letters 332b

καὶ εὐνούχου χειρώσεως, διένειμέ τε μέρη μείζω ἕκαστα Σικελίας πάσης ἑπτά, καὶ πιστοῖς ἐχρήσατο τοῖς κοινωνοῖς καὶ οὐκ ἐπιτιθεμένοις οὔτε αὐτῷ οὔτε ἀλλήλοις, ἔδειξέν τε παράδειγμα οἷον χρὴ τὸν νομοθέτην καὶ βασιλέα τὸν ἀγαθὸν γίγνεσθαι· νόμους γὰρ κατασκευάσας ἔτι καὶ νῦν διασέσωκεν τὴν Περσῶν ἀρχήν. ἔτι δὲ Ἀθηναῖοι πρὸς τούτοις, οὐκ αὐτοὶ κατοικίσαντες, πολλὰς τῶν Ἑλλήνων πόλεις ὑπὸ βαρβάρων ἐμβεβλημένας ἀλλʼ οἰκουμένας παραλαβόντες, ὅμως

each greater than the whole of Sicily; and these colleagues he found loyal, neither did they make any attack either on himself or on one another. And thus he left an example of the character which should belong to the good lawgiver and king; for by the laws he framed he has preserved the empire of the Persians even until this day. Moreover, the Athenians also, after taking over many of the Greek cities which had fallen into the hands of the barbarians, though they had not colonized them themselves yet held their sway over them securely for seventy years