"Writing a book is much less like creation than it is like planting a garden or begetting a child," revealed fantasist, scholar, and Christian apologist C. S. Lewis in Letters of C. S. Lewis; "in all three cases we are only entering as one cause into a causal stream which works, so to speak, in its own way. I would not wish it to be otherwise." In beginning such classic works as The Screwtape Letters, Out of the Silent Planet, and the seven Chronicles of Narnia, the author explained in Letters to Children, "I see pictures. . . . I have no idea whether this is the usual way of writing stories, still less whether it is the best. It is the only one I know: images always come first." Such images--a faun carrying an umbrella, an English lamppost in the midst of a snowy forest, a beautiful yet awesome Lion--distinguish...