Plato, Laws 739d

ἀκούειν καὶ πράττειν, ἐπαινεῖν τʼ αὖ καὶ ψέγειν καθʼ ἓν ὅτι μάλιστα σύμπαντας ἐπὶ τοῖς αὐτοῖς χαίροντας καὶ λυπουμένους, καὶ κατὰ δύναμιν οἵτινες νόμοι μίαν ὅτι μάλιστα πόλιν ἀπεργάζονται, τούτων ὑπερβολῇ πρὸς ἀρετὴν οὐδείς ποτε ὅρον ἄλλον θέμενος ὀρθότερον οὐδὲ βελτίω θήσεται. ἡ μὲν δὴ τοιαύτη πόλις, εἴτε που θεοὶ ἢ παῖδες θεῶν αὐτὴν οἰκοῦσι πλείους ἑνός, οὕτω διαζῶντες εὐφραινόμενοι κατοικοῦσι·

and that all men are, so far as possible, unanimous in the praise and blame they bestow, rejoicing and grieving at the same things, and that they honor with all their heart those laws which render the State as unified as possible,—no one will ever lay down another definition that is truer or better than these conditions in point of super-excellence. In such a State,—be it gods or sons of gods that dwell in it,—they dwell pleasantly, living such a life as this. Wherefore one should not look elsewhere