Modern State is an intrinsically rational concept, based on constitutionalism, which, in its turn, is based on scientific concepts, while religion remains, fundamentally, an objective phenomenon, strongly anchored in society, but based on a priori postulates and transcendental beliefs. Thus, the ontological opposition between scientism and religion becomes obvious; this opposition can only be mediated through tolerance. This seemed to be the general trend in so-called occidental societies until the arrival of a third type of extremism, the relativist one, which in the legal area is translated more and more often through legal pluralism.