4 Such ravings, we may now well say, go beyond Iu, Iu, Pheu, Pheu, and every kind of tragic exclamation or utterance of misery. For who would not detest one who is the wretched contriver of such audacious falsehoods, when he perceives the truth turned by Marcus into a mere image, and that punctured all over with the letters of the alphabet? The Greeks confess that they first received sixteen letters from Cadmus, and that but recently, as compared with the beginning, [the vast antiquity of which is implied] in the common proverb: “Yesterday and before;” and afterwards, in the course of time, they themselves invented at one period the aspirates, and at another the double letters, while, last of all, they say Palamedes added the long letters to the former. Was it so, then, that until these things took place among the Greeks, truth had no existence? For, according to you, Marcus, the body of truth is posterior to Cadmus and those who preceded him— posterior also to those who added the rest of the letters— posterior even to yourself! For you alone have formed that which is called by you the truth into an [outward, visible] image.
Source: Adversus haereses (New Advent)