 The difficulty of separating the movement's philosophy from that of its main inspiration, Lurianic Kabbalah, and determining what was novel and what merely a recapitulation, also baffled historians.Some, like Louis Jacobs, regarded the early masters as innovators who introduced "much that was new if only by emphasis"; others, primarily Mendel Piekarz, argued to the contrary that but a little was not found in much earlier tracts, and the movement's originality lay in the manner it popularized these teachings to become the ideology of a well-organized sect.Among the traits particularly associated with Hasidism in common understanding which are in fact widespread, is the importance of joy and happiness at worship and religious life – though the sect undoubtedly stressed this aspect and still possesses a clear populist bent.