Despite the long and well-known history of conflict between Christians and Muslims, their mystical traditions especially in the Christian East and in Sufism, have shared for centuries many of the same spiritual methods and goals. The purpose of this book, the first major publication of its kind, is to promote precisely this more inward kind of ecumenical perspective. These essays point to a spiritual heart in which the deeper meaning of Christian and Muslim beliefs and practices come alive, and where spiritual pilgrims may discover, beyond the level of seemingly contradictory forms, an inner commonality with those who follow other paths.