This is a challenging book. I just finished reading it a few days ago and I'm still thinking about the meaning of objective reality and the power struggle between competing worldviews that often takes place in the subtle context of textbooks, lectures and culture shrouded by the overlying subject. C.S. Lewis was concerned about the philosophy and worldview taught in schools, and the same concern exists for many today. I'm not sure I grasped all the major points in this book, but I appreciate how this book forces the reader to think hard about basic assumptions made about the world that are often ignored. This book is worth reading again.