The Rosicrucian Brotherhood traces its origin to the 14th century, and claims to be heir to occult and recondite secrets that date back much, much further. The anonymous author of 'The Secret Doctrine of the Rosicrucians' reveals - perhaps for the first time - the basic tenets of their philosophy, the Nature of the visible and invisible universe, and the techniques by which the Rosicrucian adept may attain to powers inconceivable to ordinary humans who remain fettered by the restricting bonds of dogmatic religion and modern science.