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Western esotericism designates a series of historically related religious currents including Gnosticism, Hermetism, magic, astrology, alchemy, Rosicrucianism, the Christian Theosophy of Jacob Böhme and his followers, Illuminism, Mesmerism, Swedenborgianism, Spiritualism, the theosophical currents associated with Helena Blavatsky and her followers and Anthroposophy.