In such an instance we can go back to what still lived in human minds right until the eleventh or twelfth centuries through atavistic clairvoyant cognition, and we see how it all disappears in the flood of materialistic views and passes out of the consciousness of men. But now we are living at a time when through spiritual knowledge we must find it again and recreate it. Everything points clearly to the way in which evolution has made a descent so deep that a swamp has formed. The muddy water of this morass is made up of all the ideas originating in a materialistic view of the world.