According to the law of nature, wherever there is an awakening of a new and stronger life, there it tries to conquer and take the place of the old and the decaying. Nature favours the dying out of the unfit and the survival of the fittest. The final result of such conflict between the priestly and the other classes has been mentioned already.
Swami VivekanandaAs long as a man thinks, this struggle must go on, and so long man must have some form of religion.
Swami Vivekananda