The "genre" of the modern Gnostic novel encompasses an especially eclectic range of works. With this book-a fantasy by turns dark, absurd, comic, frantic, and lyrical-David Bentley Hart joins a company that includes figures as diverse as Georges Bernanos, Anatole France, David Lindsay, Philip K. Dick, Patrick White, Umberto Eco, William Gaddis, Harold Bloom, Jorge Luis Borges, Vladimir Nabokov, John Crowley, and Philip Pullman. In Kenogaia, a clockwork...