John Ronald Reuel Tolkien was Professor of Anglo-Saxon (Old English) at the University of Oxford. His research on Beowulf is still considered a standard in the field. Tolkien, however, unlike most Oxford dons, stepped out of his role as professor to create popular literature. Tolkien's best-known writings were The Hobbit and The Lord of the Rings, in which he created a fully realized world known as Middle-earth, vaguely identifiable as Northern Europe...