In this wide-ranging discussion of Kabbalah--from the mystical trends of medieval Judaism to modern Hasidism--one of the world's foremost scholars considers different visions of the nature of the sacred text and of the methods to interpret it. Moshe Idel takes as a starting point the fact that the postbiblical Jewish world lost its geographical center with the destruction of the temple and so was left with a textual center, the Holy Book. Idel argues...