R. C. Sproul, the “honorary presuppositionalist,” wrote a book several years ago entitled The Psychology of Atheism, recently re-published under the title If There’s a God, Why Are There Atheists?25 This is an interesting exercise in negative apologetics in which Dr. Sproul responds to the attacks coming from different naturalistic-humanistic theories against religious belief. However, the exercise also becomes an attack, returning against themselves the opponents’ arguments and showing the folly of their views. Interestingly enough, Dr. Sproul himself almost apologizes in the preface for this not being “a comprehensive defense of the Christian faith” because it does not provide evidence for the existence of God (positive apologetics). However, this original contribution to the actual environment of the present culture is much more valuable than what a recapitulation of old arguments could be.
Another valuable contribution by Dr. Sproul is his book on philosophy of science entitled Not a Chance: The Myth of Chance in Modern Science and Cosmology.26 Although the argument has a close resemblance with some varieties of the cosmological argument, it is important to notice that the book is not aimed to demonstrate the existence of God, but to disprove an essential element of the major alternative view in the western world: naturalism and its mythological view of chance.
This kind of apologetic does not constitute a direct argument for the existence of God. What it does is to nullify the contending alternative, thus setting apart God as Lord over all. This destroys the excuses which the fallen man uses to suppress the sensus divinitatis in him, and if it does not produce conviction, repentance and conversion, it at least leaves him naked without excuse for his rebellion, and condemns him in the tribunal of his own conscience. This can, by God’s grace, trigger in an individual the forming mechanism of belief in the Christian faith.