It has been eighty years since C.S. Lewis wrote his major apologetics works. They came out during World War II. The world has changed radically since then. His arguments are still valid, but that validity might not be as obvious as it used to be. It is not enough then for us just to parrot Lewis. We need to understand him so we can emulate him. We need to know his arguments and their strengths and weaknesses. We need to know how...