O light of the Prophet

I said when I sat at the entrance to the Medina Mosque, where the Messenger, peace be upon him, was the grave of this? This is the greatness .. This is the beginning .. This is the man of the master of men .. the greatest people .. how? It is the will of God .. How did the barbarism turned into a civilization .. How did the ruggedness turned into tolerance, into tenderness, into literature, to the...