“Judged by the smallness of the means at his disposal, and the extent and permanence of the work that he accomplished, his name in world's history shines with a more specious lustre than that of the Prophet of Mecca. To the impulse which he gave numberless dynasties have owed their existence, fair cities and stately palaces and temples have arisen, and wide provinces became obedient to the Faith. And beyond all this, his words have governed the belief of generations, been accepted as their rule of life, and their certain guide to the world to come. At a thousand shrines the voices of the faithful invoke blessings on him, whom they esteem the very Prophet of God, the seal of the Apostles... Judged by the standards to human renown, the glory of what mortal can compare with his.”

J. W. H. Stab ('Islam and its Founder')