'Presents an overview of the development of Sufism from its earliest beginnings followingthe death of the Prophet until the present day.The author traces this history from what he callsthe Sufi tradition of piety, practised largely byisolated individuals, through the appearance ofa variety of different forms of religious practice which eventually develop into increasinglystructured religious brotherhoods with formalised sets of religious "rules" and hierarchies ofauthority.'