* Have you ever read Teresa of Avila's Interior Castle? How about Fyodor Dostoevsky's The Brothers Karamazov or C.S. Lewis's Mere Christianity? They're all profiled here in this useful guide! A must-have for your library, it includes excerpts, historical background, and reasons why these beloved works have shaped the spiritual journeys of generations of believers. 400 pages, softcover from HarperOne.