"Never has a man set for himself, voluntarily or involuntarily, a more sublime aim, since this aim was superhuman; to subvert superstitions which had been imposed between man and his Creator, to render God unto man and man unto God; to restore the rational and sacred idea of divinity amidst the chaos of the material and disfigured gods of idolatry, then existing. Never has a man undertaken a work so far beyond human power with so feeble means, for he (Muhammad) had in the conception as well as in the execution of such a great design, no other instrument than himself and no other aid except a handful of men living in a corner of the desert. Finally, never has a man accomplished such a huge and lasting revolution in the world, because in less than two centuries after its appearance, Islam, in faith and in arms, reigned over the whole of Arabia, and conquered, in God's name, Persia Khorasan, Transoxania, Western India, Syria, Egypt, Abyssinia, all the known continent of Northern Africa, numerous islands of the Mediterranean Sea, Spain, and part of Gaul.

There is a surprisingly steady stream of conversion from Judaism to Islam. There is even an organization called “Jews for Allah.” Prominent Jewish converts of the last century include Leopold Weiss (Muhammad Asad) and Maryam Begum (Maryam Jameelah), who married the famous Indian Muslim scholar Abul A’la Maududi. Both were prolific authors and wrote dozens of books.