Mani's paintings.

But let us be like the illustrious Prophet (observing) how, as often as it was possible for him to say (something), he said (it); also (let us observe) what he said, also that he did not (utter) all these things, but only some of them, those things which are omitted being intelligible to the wise by means of these things which are uttered. Therefore the holy Voice commanded [Ezek. viii. 9, 10.] the Prophet obedient in everything (and said) 'go in and see the great abominations which they are doing here.' And he went in and saw all the idols of the House of Israel portrayed on the wall. So also Mani painted in colours on a scroll — as some of his disciples say—the likenesses of the wickedness which he created out of his mind, placing on hideous (pictures) the name of the Sons of the Darkness that it might declare to his disciples the ugliness of the Darkness that they might abhor it, and placing on beautiful things the name of the Sons of the Light "in order that its beauty may in itself indicate to them that they should [P. 127.] desire it," as he said, "I have written them in books and pictured them in colours; let him who hears them in words also see them in an image, and let him who is unable to learn them from . . . learn them from pictures." And perhaps he actually worships these likenesses which are pictured there.