Plato, Laws 730c

ῥητέον. ἀλήθεια δὴ πάντων μὲν ἀγαθῶν θεοῖς ἡγεῖται, πάντων δὲ ἀνθρώποις· ἧς ὁ γενήσεσθαι μέλλων μακάριός τε καὶ εὐδαίμων ἐξ ἀρχῆς εὐθὺς μέτοχος εἴη, ἵνα ὡς πλεῖστον χρόνον ἀληθὴς ὢν διαβιοῖ. πιστὸς γάρ· ὁ δὲ ἄπιστος ᾧ φίλον ψεῦδος ἑκούσιον, ὅτῳ δὲ ἀκούσιον, ἄνους. ὧν οὐδέτερον ζηλωτόν. ἄφιλος γὰρ δὴ πᾶς ὅ γε ἄπιστος καὶ ἀμαθής, χρόνου δὲ προϊόντος γνωσθείς, εἰς τὸ χαλεπὸν γῆρας ἐρημίαν αὑτῷ πᾶσαν κατεσκευάσατο ἐπὶ τέλει τοῦ βίου, ὥστε ζώντων

for gods and men alike, truth stands first. Thereof let every man partake from his earliest days, if he purposes to become blessed and happy, that so he may live his life as a true man so long as possible. He is a trusty man; but untrustworthy is the man who loves the voluntary lie; and senseless is the man who loves the involuntary lie; and neither of these two is to be envied. For everyone that is either faithless or foolish is friendless; and since, as time goes on, he is found out, he is making for himself, in his woeful old-age, at life’s close,