Plato, Laws 716c

τίς οὖν δὴ πρᾶξις φίλη καὶ ἀκόλουθος θεῷ; μία, καὶ ἕνα λόγον ἔχουσα ἀρχαῖον, ὅτι τῷ μὲν ὁμοίῳ τὸ ὅμοιον ὄντι μετρίῳ φίλον ἂν εἴη, τὰ δʼ ἄμετρα οὔτε ἀλλήλοις οὔτε τοῖς ἐμμέτροις. ὁ δὴ θεὸς ἡμῖν πάντων χρημάτων μέτρον ἂν εἴη μάλιστα, καὶ πολὺ μᾶλλον ἤ πού τις, ὥς φασιν, ἄνθρωπος· τὸν οὖν τῷ τοιούτῳ προσφιλῆ γενησόμενον, εἰς δύναμιν ὅτι μάλιστα καὶ αὐτὸν τοιοῦτον ἀναγκαῖον γίγνεσθαι,

What conduct, then, is dear to God and in his steps? One kind of conduct, expressed in one ancient phrase, namely, that like is dear to like when it is moderate, whereas immoderate things are dear neither to one another nor to things moderate. In our eyes God will be the measure of all things in the highest degree—a degree much higher than is any man they talk of. He, then, that is to become dear to such an one must needs become, so far as he possibly can, of a like character; and, according to the present argument, he amongst us that is temperate is dear to God,