As a Muslim we do not need telling that the Prophet Muhammad is the greatest man that ever lived. But when a no Muslim and especially a Christian says this and Ranks the Prophet Muhammad as the most influential person ever it is very interesting to see why.
Michael H. Hart, a Christian American says :
"My selection of Muhammad to go ahead in the list of the world 's most significant persons may surprise some readers and may be questioned by others, but he was the only man in history who was supremely successful on both the religious and secular levels " Taken from the book
By: Michael H. Hart