It is known that this Islamic heritage is based mainly on the spirit of Islam and its purposes, and therefore we find it imprinted with the Islamic character that makes it most of the time does not differ with the belief and the elements of religion that are characterized by special characteristics, methods and criteria. There is no doubt that many of these characteristics and standards differ with many of the characteristics and standards of civilizations prevailing today, due to the difference in the historical and doctrinal premises and backgrounds. There is no room in Islamic culture for materialistic doctrines, for example, nor secularism, nor positivism, nor for many doctrines and theories that do not recognize the divine laws, nor their source and reference.