An important representative of Sufism was al-Ghazali (born about 1058, died 1111), also a Persian, who was one of the first who arranged his ideas to a mystical system. The largest Sunni theologian divided up the system of moderate mysticism of Sufism into the orthodox Islam. Originated as a legal scholars he realized one day that he could actually find God with living a renouncing worldly life. He therefore gave up his professorship at the University of Baghdad, to spend many years in seclusion as a wandering dervish. He left the world many religious and spiritual writings and even managed to reconcile orthodoxy a Sufism for a while and a bit of both systems closer together. By softening the radical asceticism of the early Sufis and systematization of Sufi body of thought al-Ghazali was significant to the general recognition of Sufism in Islam. He rejected a rigid dogma and taught the way to an awareness of God, which comes from the heart. One central point for al-Ghazali was his work on the “subtle heart”. Following the doctrine of al-Ghazali people have an “ethereal Heart” in their breasts, which is home to the world of angels. This organ is guest in the material world and tells the people the way back to paradise.