Plato, Laws 630c

φανερόν ποτε ποιῆσαι βουληθεὶς λέγει ταῦτα; δῆλον ὅτι τόδε, ὡς παντὸς μᾶλλον καὶ ὁ τῇδε παρὰ Διὸς νομοθέτης, πᾶς τε οὗ καὶ σμικρὸν ὄφελος, οὐκ ἄλλο ἢ πρὸς τὴν μεγίστην ἀρετὴν μάλιστα βλέπων ἀεὶ θήσει τοὺς νόμους· ἔστι δέ, ὥς φησιν Θέογνις, αὕτη πιστότης ἐν τοῖς δεινοῖς, ἥν τις δικαιοσύνην ἂν τελέαν ὀνομάσειεν. ἣν δʼ αὖ Τύρταιος ἐπῄνεσεν μάλιστα, καλὴ μὲν καὶ κατὰ καιρὸν κεκοσμημένη τῷ ποιητῇ, τετάρτη μέντοι ὅμως ἀριθμῷ τε καὶ δυνάμει τοῦ

and every legislator who is worth his salt will most assuredly legislate always with a single eye to the highest goodness and to that alone; and this (to quote Theognis) consists in loyalty in danger, and one might term it complete righteousness. But that goodness which Tyrtaeus specially praised,