Synopsis Sufism, says Sadia Dehlvi, is the preserved spiritual path that forms the heart of Islam. In this engaging narrative dealing mainly with the subcontinent, she draws on a range of Muslim texts and traditions to show that Sufism is not an innovation, but the continuity of a thought process that links Muslims to their religious predecessors all the way to Prophet Muhammad. The book delves into the remarkable lives of the early Sufis, their literature, and their philosophies that emphasize the purification of the heart. It highlights the major Sufi orders, their popularity in the subcontinent and the impact of the teachings of the Sufi Masters on the devotional aspect of Islam. From the early days of Islam to the modern-day concerns of militant ideologies, the author picks up each strand of religious debate to explore its history and its implications for human civilization, and in the process offers an insightful assessment of the complex relationship of Sufism with both Muslim and non-Muslim societies.