Geisler's approach may seem unnecessary to those of us brought up in Christian homes and/or have always believed in objective truth; however, in this post-modern age it is essential.  The author handles each of the following approaches to determining truth: agnosticism (skepticism), rationalism, fideism, experientialism, evidentialism, pragmatism, combinationalism, deism, pantheism, panentheism, and atheism.  Geisler adeptly demonstrates how each of these philosophies self-destructs leaving only theism as a viable option.  Once this is established, he defends the reliability and authority of the Bible and the deity of Jesus Christ.

     If you are not familiar with all of the above terms or with philosophical language in general then this book will be somewhat difficult for you to comprehend but not impossible.  In fact, each chapter concludes with a summary utilizing everyday terms.  If you are having trouble understanding each chapter, try reading the summary first and then read through the rest of the chapter.  This will help you to understand the concepts being presented. 

     Overall, I have to admit that this is one of the most important books I have ever read.  Since reading this book I have been much more successful in witnessing to unbelievers because I am able to recognize the bankruptcy of their underlying philosophy and show them why their viewpoint cannot be an adequate test for truth.  We will soon have a detailed article on the self-defeating claims of each of these views (See "Epistemology" Series in the Philosophy section of the Articles page).