A Hobbit, a Wardrobe, and a Great War: How J.R.R. Tolkien and C.S. Lewis Rediscovered Faith, Friendship, and Heroism in the Cataclysm of 1914-18

by Joseph Loconte

This helps to explain the bitter conflict between the forces of slavery and liberty that runs through their stories: no creatures are born for captivity, and none have a birthright to oppress others.