Lord Of The Elves And Eldils: Fantasy And Philosophy In C. S. Lewis And J. R. R. Tolkien,

"[This book] is a fascinating look at the fantasy and philosophy of C. S. Lewis and J. R. R. Tolkien. The two men were friends and fellow professors at Oxford, renowned Christian thinkers who both 'found it necessary to create for the purposes of their fiction other worlds—not utopias or dystopias, but different worlds.'" -- From back cover