This is the first English release of a work by this twelfth century mystic known as "the Master of Ecstatic Speech." Translated from Arabic by Carl W. Ernst, professor and chair, Department of Religious Studies, University of North Carolina at Chapel Hill, here is a visionary diary comparable to the mystical transports of Hildegard of Bingen. The term "unveiling" refers to the mystical experience in which God rips away the veil that divides ordinary human consciousness from divine reality. Ruzbihan's vigils lead to visions of the essence, attributes, and actions of the Most High. This Sufi swims in oceans, revels in the garden of paradise, and is showered with roses. These spiritual imaginings constantly refer to God's beauty, majesty, and love. At one point Ruzbihan notes, "When I cried from regret, the angels drank my tears." This mystical diary is another jewel to be added to the treasure trove of Islamic classics.