Judaism guides its adherents in both practice and belief, and has been called not only a religion, but also a "way of life,"^[68] which has made drawing a clear distinction between Judaism, Jewish culture, and Jewish identity rather difficult. Throughout history, in eras and places as diverse as the ancient Hellenic world,^[69] in Europe before and after The Age of Enlightenment (see Haskalah),^[70] in Islamic Spain and Portugal,^[71] in North Africa and the Middle East,^[71] India,^[72] and China,^[73] or the contemporary United States^[74] and Israel,^[75] cultural phenomena have developed that are in some sense characteristically Jewish without being at all specifically religious. Some factors in this come from within Judaism, others from the interaction of Jews or specific communities of Jews with their surroundings, others from the inner social and cultural dynamics of the community, as opposed to from the religion itself. This phenomenon has led to considerably different Jewish cultures unique to their own communities, each as authentically Jewish as the next.^[76]

http://en.wikipedia.org/wiki/Jew#Jewish_culture