Due to the duality taught in many Western religions, for example of heaven and hell, good and evil or sin and grace, some people believe that non duality plays no part in Western philosophies at all. However, it is present in some aspects of Gnosticism and Neoplatonism, to name but two traditions. Some Christian mystics believed in it, and the same can be said of some minor Jewish sects, as well. Transcendentalism also made much of non duality from the 19th century onwards. Out of this tradition, certain aspects of the 20th century New Age movement also delved into aspects of nondualism, too.