Behind the veil of all the hieratic and mystical allegories of ancient doctrines, behind the shadows and the strange ordeals of all initiations, under the seal of all sacred writings, in the ruins of Nineveh or Thebes, on the crumbling stones of the old temples, and on the blackened visage of the Assyrian or Egyptian sphinx, in the monstrous or marvellous paintings which interpret to the faithful of India the inspired pages of the Vedas, in the strange emblems of our old books of alchemy, in the ceremonies at reception practised by all mysterious societies, traces are found of a doctrine which is everywhere the same, and everywhere carefully concealed.