“On the assumptions of the natural man, logic is a timeless impersonal principle, as factuality is controlled by chance. It is by means of universal timeless principles of logic that the natural man must, on his assumptions, seek to make intelligible assertions about the world of reality or chance. But his cannot be done without falling into self-contradiction. About chance no manner of assertion can be made. In its very idea it is the irrational. And how are rational assertions to be made about the irrational?” (Christian Apologetics, Cornelius Van Til, p. 166).