“The proselyting power of Islam is extraordinary, and its hold upon its votaries is even more remarkable. Throughout history there has been no single instance where a people, once become Moslem, has ever abandoned the faith. Extirpated they may have been, like the Moors of Spain, but extirpation is not apostasy. This extreme tenacity of Islam, this ability to keep its hold, once it has got a footing, under all circumstances short of downright extirpation, must be borne in mind when considering the future of regions where Islam is to-day advancing.”