Islam impacts upon the world, so what is for a Muslim peace, is for the unbelievers a source of fear or ridicule. For the Muslim the Holy Prophet Muhammad said, “Behold, for I am leaving amongst you . . . the Book of Allah, the Exalted and Glorious, and that is the rope of Allah. He who holds it fast would be on right guidance and he who abandons it would be in error.” (Sahih Muslim, Book 31, Number 5923). This section will look at how theistic Islam can deal with other philosophies of the world.