The Rose Cross deals with the interaction between two movements of thought in eighteenth-century Germany: the philosophy of the Enlightenment, and the complex of ideas known as Rosicrucian. Dating from the early seventeenth century and drawing on Pietism, Freemasonry, Kabbalah and alchemy, the Rosicrucianism movement enjoyed a revival in Germany during the eighteenth century. Historians have often depicted this neo-Rosicrucianism as a Counter-Enlightenment force. Dr. McIntosh argues rather that it was part of a "third force," which allied itself sometimes with the Enlightenment,...