The partisans of Ali themselves soon split into several parties; and though united in their veneration for the blood of the prophet, which flowed in the veins of the descendant of Ali, they neither agreed in the prerogatives they attached to this noble origin, nor on the branch to which the right to the dignity of imam was transmitted. This name, which comprises the idea of all temporal and spiritual power, and which, in the opinion of some fanatics, was nearly co-equal with that of divinity, was the watch-word of all the enemies of the khalifs descended from the houses of Moawia and Abbas; but they did not all recognise the same person as imam. One of the most powerful, among the factions formed of the followers of Ali, was that of the Ismailians, so called, because they maintained that the dignity of imam had been transmitted, through an uninterrupted succession of descendants, from Ali to a prince named Ismail; and that, since his time, this same office had been filled by personages unknown to man, awaiting the moment when the posterity of Ali should at length triumph over its enemies. A character peculiar to this sect is, that it explains all the precepts of the Musulman law allegorically; and this allegory was pushed so far by some of the Ismailian doctors, that it tended to nothing less than the abolition of all public worship, and the foundation of a purely philosophical doctrine, and a very licentious moral code, on the ruins of all revelation and divine authority. To this sect belong the Karmathites, whose enormities we shall not here mention, to whom the Wahabees, who, at this time, fill several of the provinces of the Ottoman empire with the terror of their name, and who, under the mask of reformers, appear destined to overthrow the Mohammedan religion, seem to have succeeded. From this same sect issued the Fatimite khalifs. These, after establishing themselves in Africa, were not long in depriving the khalifs of Bagdad, of Egypt and Syria, and they formed a potent empire, which lasted two centuries and a half, until it was overthrown by Saladin. These Fatimite khalifs acknowledged themselves to be Ismailians; but the interests of their policy obliged them to disguise the secret doctrines of their sect, which were known only to a small number of adepts, and the most intolerant of them imposed no other obligation on their subjects, than the recognition of Ali and his descendants’ right to the sovereignty, and to vow a mortal hatred against the khalifs of Bagdad. In the person of the Fatimites, the Ismailians had ascended the throne, and deprived the Abassides of a considerable portion of their empire: but their ambition was not satisfied. The race of the prophet ought not to share the sovereignty with the descendants of usurpers, and even the honour of Islamism, and of the doctrine taught and propagated by the imams, required that all Musulmans should be united in the same faith, and pay obedience to a single legitimate pontiff.