Most high religions make an effort to present the world and life as a unified whole and regard all discord and incongruities as provisional or illusory....In contrast, the emphasis in Jewish mysticism is upon the contradictory, the paradoxical, and the unresolved mystery.

A. J. Heschel, "Confusion of Good and Evil", in "The Insecurity of Freedom" FS&G, pp. 135 - 136