It cannot be doubted that these men were the true representatives of the old Islam. They claimed for themselves the heirship to Abu Bakr and Umar, and their claim was just. Islam had been secularized; worldly ambition, fratricidal strife, luxury, and sin had destroyed the old bond of brotherhood. So they drew themselves apart and went their own way, a way which their descendants still follow in Uman, in east Africa, and in Algeria. To them the orthodox Muslims—meaning by that the general body of Muslims—were antipathetic more than even Christians or Jews. These were “people of a book” (_ahl kitab_), i.e., followers of a revealed religion, and kindly treatment of them was commanded in the Qur’an. They had never embraced Islam, and were to be judged and treated on their own merits. The non-Kharijite Muslims, on the other hand, were renegades (_murtadds_) and were to be killed at sight. It is easy to understand to what such a view as this led. Numberless revolts, assassinations, plunderings marked their history. Crushed to the ground again and again, again and again they recovered. They were Arabs of the desert; and the desert was always there as a refuge. It is probable, but as yet unproved, that mingled with the political reasons for their existence as a sect went tribal jealousies and frictions; of such there have ever been enough and to spare in Arabia. Naturally, under varying conditions, their views and attitudes varied. In the wild mountains of Khuzistan, one of their centres and strongholds, the primitive barbarism of their faith had full sway. It drew its legitimate consequence, lived out its life, and vanished from the scene. The more moderate section of the Kharijites centred round al-Basra. Their leader there was Abd Allah ibn Ibad, and from about the year 60 on the schism between his followers and the more absolute of these “come-outers” can be traced. It is characteristic of the latter that they aided for a time Abd Allah ibn az-Zubayr when he was besieged in Mecca by the Umayyads, but deserted him finally because he refused to join the names of Talha and his own father, az-Zubayr, with those of Uthman and Ali in a general commination. The Kharijites were all good at cursing, and the later history of this section of them shows a process of disintegration by successive secessions, each departing in protest and cursing those left behind as heathen and unbelievers. Characteristic, too, for the difference between the two sections, were their respective attitudes toward the children of their opponents. The more absolute party held that the children of unbelievers were to be killed with their parents; the followers of Abd Allah ibn Ibad, that they were to be allowed to grow up and then given their choice. Again, there was a difference of opinion as to the standing of those who held with the Kharijites but remained at home and did not actually fight in the Path of God. These the one party rejected and the other accepted. Again, were