For we need not flatter ourselves that even if the non-theist be shown that his position is self-contradictory in the sense that it contradicts his own assumptions and breaks to pieces his own law of contradiction, he will turn from his ways of himself. Instead, he will conclude that man must remain in such complete irrationality, rather than turn to analogical reasoning. The miracle of regeneration has to occur somewhere, and all that we are arguing for is that we must ask where it is that the Holy Spirit will most likely perform this miracle. And then there can be no doubt but that the likelihood is in favor of that place where the non-theist has to some extent seen the emptiness and vanity of his own position.
– Cornelius Van Til, A Survey of Christian Epistemology p.208