'A'ishah al-Ba'uniyyah (d. 923/1517) of Damascus was one of the great women scholars in Islamic history. A mystic and prolific poet and writer, 'A'ishah composed more works in Arabic than any other woman before the twentieth century. Yet despite her extraordinary literary and religious achievements, 'A'ishah al-Ba'uniyyahremains largely unknown. For the first time her key work, The Principles of Sufism, is available in English translation.The Principles of Sufism is a mystical guide book to help others on their spiritual path. She recounts the fundamental stages and states of the spiritual novice's transformative journey, emphasizing the importance of embracing both human limitations and God's limitless love. Drawing on lessons and readings from centuries-old Sufi tradition, 'A'ishah advises the seeker to repent of selfishness and turn to a sincere life of love. In addition to his lucid translation, Th. Emil Homerin provides an insightful introduction, notes and a glossaryto 'A'ishah al-Ba'uniyyah's remarkable account of the pursuit of mystical illumination.