This book is literally fantastic. I have read it several times, and I will read it again. It is one of the few science fictions books I like. No wonder C. S. Lewis liked it so much. He was a good enough writer to appreciate the art in such a book that is overlooked by people that only like an easy style. Here something so important is being said that the artist doesn't stop to polish the details — like Michangelo's "Men Tearing Themselves out of Rocks" — the roughness of the texture adds to the final quality of the reality presented.