“Occult,” a 1902 international encyclopedia of religion tells us, is derived “from Latin occultus—Hidden,” and is applied to the assumption that insight into and control over nature is to be obtained by mysterious or magical procedures and by long apprenticeship in secret lore. The physical science of the middle ages, alchemy and astrology, and in modern times spiritualism, theosophy, and palmistry contain various factors of occult lore. Such doctrines, known as occultism, fall outside the realm of modern science. See MAGIC.