Salam Maulidur Rasul

Quoting Michael H Hart's "The 100: A ranking of the most influential person in history" from Quora app, below:

My choice of Muhammad to lead the list of the world's most influential 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.-Michael H Hart.

1. First, Muhammad played a far more important role in the development of Islam than Jesus did in the development of Christianity. Although Jesus was responsible for the main ethical and moral precepts of Christianity (insofar as these differed from Judaism), St. Paul was the main developer of Christian theology, its principal proselytizer, and the author of a large portion of the New Testament.

2. Since the Koran is at least as important to Moslems as the Bible is to Christians, the influence of Muhammed through the medium of the Koran has been enormous It is probable that the relative influence of Muhammad on Islam has been larger than the combined influence of Jesus Christ and St. Paul on Christianity.

3. Furthermore, Muhammad (unlike Jesus) was a secular as well as a religious leader. In fact, as the driving force behind the Arab conquests, he may well rank as the most influential political leader of all time.Of many important historical events, one might say that they were inevitable and would have occurred even without the particular political leader who guided them. For example, the South American colonies would probably have won their independence from Spain even if Simon Bolivar had never lived. But this cannot be said of the Arab conquests. Nothing similar had occurred before Muhammad, and there is no reason to believe that the conquests would have been achieved without him. The only comparable conquests in human history are those of the Mongols in the thirteenth century, which were primarily due to the influence of Genghis Khan. These conquests, however, though more extensive than those of the Arabs, did not prove permanent, and today the only areas occupied by the Mongols are those that they held prior to the time of Genghis Khan. 

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In celebration of the birth of Muhammad on the 12 Rabiul awwal.