According to the Quran, Prophet Muhammad was the most excellent example for all of humanity. Even non-Muslim historians recognize him to be one of the most successful personalities in history. In 1946 Reverend R Bosworth-Smith in "Mohammed & Mohammedanism." wrote about the Prophet: "Head of the state as well as the Church, he was Caesar and Pope in one; but, he was pope without the pope's claims, and Caesar without the legions of Caesar, without a standing army, without a bodyguard, without a palace, without a fixed revenue. If ever any man had the right to say that he ruled by a right divine It was Mohammad, for he had all the power without instruments and without its support. He cared not for dressing of power. The simplicity of his private life was in keeping with his public life." In 1978 Michael Hart in his book "The 100 Most Influential Persons In History", selected Prophet Muhammad as the most influential person in history and had this to say about his choice: "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 secular and religious level... It is this unparalleled combination of secular and religious influence which I feel entitles Muhammad to be considered the most influential single figure in human history." The Prophet's words and actions show us the way to achieve success, not just in this world but in the hereafter as well. In short, the Prophet of Islam was a positive thinker in the full sense of the word. All his activities were result-oriented. He refrained from all negative elements of behavior that are counter-productive to achievement such as hate, envy, arrogance, greed, etc. All the actions of the Prophet were solely based on a pure intention to please God. By studying the life of the Prophet we can identify some of the principles of success.