"A crucially vital work in the long history of Jewish esoteric spirituality. Aside from its intrinsic importance, the book’s influence has been enormous, and is likely to continue all but indefinitely."–Harold Bloom, Yale University
"Major Trends [is] the canonical modern work on the nature and history of Jewish mysticism. For a sophisticated understanding, not only of the dynamics of Jewish mysticism, but of the exquisite complexities of Jewish history and tradition, Major Trends is a major port of entry through which one must pass."–Yosef Hayim Yerushalmi, Columbia University
From the Trade Paperback edition.