If one does not make human knowledge wholly dependent upon the original self-knowledge and consequent revelation of God to man, then man will have to seek knowledge within himself as the final reference point. Then he will have to seek an exhaustive understanding of reality. He will have to hold that if he cannot attain to such an exhaustive understanding of reality he has no true knowledge of anything at all. Either man must then know everything or he knows nothing. This is the dilemma that confronts every form of non-Christian epistemology
Cornelius Van TilWhen man thinks in self-conscious submission to the voluntary revelation of the self-sufficient God, he has therewith the only possible ground of certainty for his knowledge.
Cornelius Van TilHe [Christ] came to bring peace, to be sure, but the peace that He came to bring must be built upon the complete destruction of the power of darkness.
Cornelius Van TilThe only proof for the existence of God is that without God you couldn't prove anything.
Cornelius Van TilThere are those, of course, who deny that they need any form of authority. They are the popular atheists and agnostics. Such men say that they must be shown by 'reason' whatever they are to accept as true. But the great thinkers among non-Christian men have taken no such position. They know that they cannot cover the whole area of reality with their knowledge.
Cornelius Van Til