Both Tolkien and C.S. Lewis are known around the world as the creators of Middle-earth and Narnia. But few of their readers and fans know about the complex friendship between Tolkien and C.S. Lewis. Without the persistent encouragement of his friend, Tolkien would never have completed The Lord of the Rings. This great tale, along with the connected matter of The Silmarillion, would have remained merely a private hobby. Likewise, all of Lewis' fiction,...