Why would anyone seek out the very experience the rest of us most wish to avoid? Why would religious worshipers flog or crucify themselves, sleep on spikes, hang suspended by their flesh, or walk for miles through scorching deserts with bare and bloodied feet? In this book, Ariel Glucklich argues that the experience of ritual pain, far from being a form of a madness or superstition, contains a hidden rationality and can bring about a profound transformation of the consciousness and identity of the spiritual seeker. Steering a course between purely cultural and purely biological explanations, Glucklich approaches sacred pain from the perspective of the practitioner to fully examine the psychological and spiritual effects of self-hurting. He discusses the scientific understanding of pain, drawing on research in fields such as neuropsychology and neurology. He also ranges over a broad spectrum of historical and cultural contexts, showing the many ways mystics, saints, pilgrims, mourners, shamans, Taoists, Muslims, Hindus, Native Americans, and indeed members of virtually every religion have used pain to achieve a greater identification with God.