C. S. LEWIS'S ARGUMENT AGAINST NATURALISM REVISITED

In this article, I critically assess Peter van Inwagen's rejection of C. S. Lewis's argument against Naturalism. Van Inwagen argues that Lewis (1960) errs on two fronts. First, he falsely assumes that Naturalism implies Spinozism: that the only way the world could be is the way it is. Second, the central premise of Lewis's argument is asserted without proof. I argue that van Inwagen is mistaken on both counts.