عنوان مقاله [English]
The purpose of this article is to investigate the necessity of religion from a sociological perspective in the two periods of modernism and postmodernism. A librarian method is used to answer this question, which is partly based on the results of "social concrete experience". The views of some outstanding anti-religious scholars of the period of modernism is first presented; then the views of the important scholars of the period of post-modernism and the international organizations are explained. Although the idea of secularism has been dominant on the world for more than hundred years and it has been developed but, as this research shows, secularism is declined at the beginning of the period of post-modernism and desecularism has appeared and developed. The cognitive outcome of this research is to strengthen the historical-universal view regarding major religious changes; in addition, as a national outcome of this research, it improves the views of those Westernized fellow citizens – who still think on the basis of modern theories and analysis and thus believe the Islamic republic of Iran and its resultant system moves in the opposite direction of contemporary and future world and human changes – concerning how much does the contemporary world tend to religion. Unlike this incorrect recognition, the Islamic Republic of Iran can be the central point and leader of the post-modern religious conceptual changes.