John William Draper says

Four years after the death of Justinian, A.D. 569, was born at Mecca, in Arabia the man who, of all men exercised the greatest influence upon the human race . . . Mohammed . . ."

 Source: John William Draper, A History of the Intellectual Development of Europe, London 1875, Vol. 1, pp. 329-330

 

 

John William Draper was an American scientist, philosopher, physician, chemist, historian and photographer. He is credited with producing the first clear photograph of a female face and the first detailed photograph of the Moon. Wikipedia