The surveys may also include those who are deists, spiritual and pantheists. The surveys may also include those who are spiritual, deists, and pantheists. According to pantheists, there are elements of pantheism in some forms of Christianity. Some of the most famous pantheists are the Stoics, Giordano Bruno and Spinoza. However, not all philosophers who did so can be classified as naturalistic pantheists. Spinoza inspired a number of other pantheists, with varying degrees of idealism towards nature. Pantheists do not believe in a distinct personal or anthropomorphic god. It is a membership organization that has been serving Pantheists worldwide since 1975.