Marx's philosophy is known as "dialectical materialism-." No place is given by him to the soul or the spirit. According to him, religion is the opium of the masses which keeps them in a world of material reality. He adopted the Hegelian dialectic to give a materialist account of social formations. His concept of class conflict is a basic point. Conflicts arise from the desire to control the means of production. He attacked the laissez-faire policy which allows the industrialists and capitalists to exploit the working class without let or hindrance.