"Rasmussen's book is destined to be a modern classic. Rasmussen combines simplicity, clarity, and depth to an extraordinary degree, resulting in a book that makes some of the most advanced work in contemporary philosophical theology accessible to the general reader, without sacrificing any logical precision. Rasmussen's style is winsome and engaging, drawing the reader into a thrilling adventure of metaphysical investigation of the existence and nature of reality's ultimate foundation." -Robert Koons, professor of philosophy, University of Texas at Austin