Human religious experiences are remarkably uniform; many can be pharmacologically induced. Recent research into the neurology of religious experience has shown that, when worshipping or praying, a certain part of the brain, apparently dormant during other activities, becomes active. What does all this mean for those of faith and those with none? In this fascinating book barrister Charles Foster takes a survey of the evidence - from shamans to medieval mystics, to out-of-body experiences and epilepsy, via Jerusalem and middle-class Christianity - and assesses its significance. Written in short, accessible chapters, this is a fascinating tour of religious and mystical experiences and their relation to human physiology.