Theosophical mysticism
Within the system of Theosophy, developed by occultist Helena Blavatsky and others since the second half of the 19th century, Theosophical mysticism draws upon various existing disciplines and mystical models, including Neo-platonism, Gnosticism, Western esotericism, Freemasonry, Hinduism and Buddhism. == Overview of Blavatsky's teachings == The three fundamental propositions expounded in The Secret Doctrine are – that there is an omnipresent, eternal, boundless, and immutable reality of which spirit and matter are complementary aspects; that there is a universal law of periodicity or evolution through cyclic change; and that all souls are identical with the universal oversoul which is itself an aspect of the unknown reality.