Naturalism is the strongest force against the legitimate expression of religion in the sciences today. I attempt to show the problems of naturalism in this paper which is composed of three parts. Part 1 is a struggle to find a coherent definition of naturalism as it is currently understood. In Part 2, I address the unscientific presuppositions of naturalism. Finally in Part 3, I frame and articulate to the naturalists’ community a strong argument against naturalism ala Alvin Plantinga and Richard Taylor, (different than the one raised by C. S. Lewis). This was a paper given at EPS 2008 in Rhode Island.