anarchy rather than of material chaos. For violence, as always, had produced counter-violence, and it was thus that while the Karmathites were rushing to their own destruction through a series of bloody conflicts, another branch of the Ismailis were quietly reorganizing their forces more in conformity with the original method of their founder. These were the Fatimites, so-called from their professed belief that the doctrine of the Prophet had descended from Ali, husband of Fatima, Mohammed's daughter. Whilst less extreme than the Karmathites, or than their predecessor Abdullah ibn Maymūn, the Fatimites, according to the historian Makrizi, adopted the method of instilling doubts into the minds of believers and aimed at the substitution of a natural for a revealed religion. Indeed, after the establishment of their power in Egypt, it is difficult to distinguish any appreciable degree of difference in the character of their teaching from the anarchic code of Abdullah and his more violent exponent Karmath.
The Fatimites
The founder of the Fatimite dynasty of the Khalifas was one Ubeidallah, known as the Mahdi, accused of Jewish ancestry by his adversaries the Abbasides, who declared--apparently without truth--that he was the son or grandson of Ahmed, son of Adbullah ibn Maymūn, by a Jewess. Under the fourth Fatimite Khalifa Egypt fell into the power of the dynasty, and, before long, bi-weekly assemblages of both men and women known as "societies of wisdom" were instituted in Cairo. In 1004 these acquired a greater importance by the establishment of the Dar ul Hikmat, or the House of Knowledge, by the sixth