The present paper tries to prove the need of modern society to religion and reject the view that man does not need to religion. The subject has various dimensions which cannot be dealt with here. Thus, the paper is limited to need of modern society to religion in the realm of law and morality. As in traditional societies law was based on religion, in modern societies, too, making and maintaining law are in need of religion and despite the claims made rationality is not sufficient. Morality, too, as a necessary need of the modern world, is dependant on religion. Religion has a significant role in giving meaning to moral principles, identifying, and supporting them. Modern rationality is incapable of organizing man’s life in different realms such as law and morality because of the practical reason’s being under the influence of human desires, the destructive aftermaths of instrumental reason, man and his social life being still unknown, ignoring the direct and indirect influences of religion on forming the positive dimensions of modern civilization, ignoring the real life of man, and reducing life to a mere material life.