5.5.8   But yet who bade that Manichaeus write on these things also, skill in which was no element of piety? For Thou hast said to man, Behold piety and wisdom; of which he might be ignorant, though he had perfect knowledge of these things; but these things, since, knowing not, he most impudently dared to teach, he plainly could have no knowledge of piety. For it is vanity to make profession of these worldly things even when known; but confession to Thee is piety. Wherefore this wanderer to this end spake much of these things, that convicted by those who had truly learned them, it might be manifest what understanding he had in the other abstruser things. For he would not have himself meanly thought of, but went about to persuade men, "That the Holy Ghost, the Comforter and Enricher of Thy faithful ones, was with plenary authority personally within him." When then he was found out to have taught falsely of the heaven and stars, and of the motions of the sun and moon (although these things pertain not to the doctrine of religion), yet his sacrilegious presumption would become evident enough, seeing he delivered things which not only he knew not, but which were falsified, with so mad a vanity of pride, that he sought to ascribe them to himself, as to a divine person.