Mysticism has a place in all the major world religions. This book begins with the assertion that Christian Mysticism, in its most essential state, is the mystery of Christ's union with God. Certain major theologians including Albert Ritschl and Karl Barth have stood in opposition to the concept of mysticism and have even suggested that it is opposite to the heart of the Gospel and indeed the whole Bible. Yet Bouyer here makes a strong argument for understanding Mysticism as central to the Christian faith. This analysis of mysticism is contrasted with its place in pagan religions and its role throughout Christian history. In so doing, Bouyer reveals the significance of mysticism for understanding the meaning of life.