Proof of Heaven is more than just an awe-inspiring account of a profound encounter with spiritual reality. Dr. Alexander's neuroscience career taught him that near-death experiences are brain-based illusions, and yet his personal experience left him dumbstruck. His honest struggle to make sense of this unforgettable journey is a gripping story, unique in the literature of spiritual experiences, that may well change how we understand our role in the universe. --Bruce Greyson, MD, co-editor of The Handbook of Near-Death Experiences: Thirty Years of Investigation