Nathan Hofer summarizes his book on Sufism (Islamic mysticism). Sufism came to extraordinary prominence in Egypt after the 12th century. By the middle of the 14th century, Sufism had become massively popular. How and why did this popularization happen? Hofer's book is the first to address this issue directly, surveying the social formation and histories of several different Sufi collectivities from this period. For transcript, captions, and more information, visit www.loc.gov/today/cyberlc/feature_wdesc.php?rec=6878