True belief is the most important value of life because life completely shapes according to believes. Islamic faith, which promises to its believers happiness of two earth, takes its reality from its divine source. But we wonder if the Islamic Thought could put a appropriate doctrine for Islamic revelation, Quran and Sunnah. So we have to criticize our belief tradition in order to know where we are going. So we have to anylize what muslim thinkers have said and written about holy faith of the last religion on the earth.