Secularism

“...Secularism is, in its way, a religion to itself, and it is a religion that cannot tolerate infidels or heretics. ...this is by no means an accident, a mere byproduct of the passion and folly to which every human being succumbs from time to time. For secularism is, necessarily and inherently, a deeply irrational and immoral view of the world, and the more thoroughly it is assimilated by its adherents, the more thoroughly do they cut themselves off from the very possibility of rational and moral understanding. Moreover, and for this very reason, its adherents unavoidably find it difficult, indeed almost impossible, to perceive their true condition. The less they know, the less they know it.”
~Edward Feser