Olav Hammer locates "A Course in Miracles" in the tradition of channeled works from those of Madam Blavatsky through to the works of Rudolf Steiner and notes the close parallels between Christian Science and the teachings of the Course. Alternatively, it can be seen more broadly as part of the tradition of mystical literature described in William James' "The Varieties of Religious Experience" and Aldous Huxley's "The Perennial Philosophy". In "'Knowledge is Truth': A Course in Miracles as Neo-Gnostic Scripture" in "Gnosis": "Journal of Gnostic Studies", Simon J. Joseph outlines the relationship between the Course and Gnostic thinking. Daren Kemp also considers "ACIM" to be neo-Gnostic.