1 But there is another among these heretics, Marcus by name, who boasts himself as having improved upon his master. He is a perfect adept in magical impostures, and by this means drawing away a great number of men, and not a few women, he has induced them to join themselves to him, as to one who is possessed of the greatest knowledge and perfection, and who has received the highest power from the invisible and ineffable regions above. Thus it appears as if he really were the precursor of Antichrist. For, joining the buffooneries of Anaxilaus to the craftiness of the magi, as they are called, he is regarded by his senseless and cracked-brain followers as working miracles by these means.
Source: Adversus haereses (New Advent)