This comprehensive volume is an initiation into Sufism by a Western teacher of Islamic mysticism who saw in this ancient tradition a universal path to enlightenment. Atom from the Sun of Knowledge explores the spiritual secrets of many of the practices of Islam and interprets the spiritual wealth of its sacred book, the Koran, and the sayings of the Prophet Muhammad, or the Hadith. The volume also contains modern ecstatic Sufi poetry and spiritual discourses that illuminate the essential unity of all existence and the immense love at its heart.