This book has really helped me understand the overarching meanings of C.S. Lewis' books -- even though that's not the main intention of the book, Louis Markos brings most of Lewis' canon to light. The book was written to open the eyes of Christians to the movement our post-enlightenment modern and post-modern world has taken. Louis Markos shows us how C.S. Lewis, or Lewis Agonistes (Latin for wrestler), wrestled with the modernist of his time. Louis Markos then uses Lewis to argue with the postmodernists of our time. How, for example, Lewis argued with the materialists, who believe in only what his senses tell him. How Lewis wrestled with the idea that we as a race aren't perfectible (this mindset gave us Hitler, Stalin, and other tyrants who tried to perfect 'man'), and many other issues covering the sciences, the arts, and even issues that deeply touch our lives. I strongly recommend this book, it can provide a lot of insight to C.S. Lewis fans of any stripe.