"The essential thing to understand is that there is a certain sevenfold division of everything that exists in the manifested world, whether of life or matter. All life which exists in our chain of worlds passes through and belongs to one or other of Seven Rays, each having seven subdivisions. In the universe there are forty-nine such Rays, making, in sets of seven, the Seven Great Cosmic Rays, flowing from or through the Seven Great Logoi. In our chain of worlds, however, and perhaps in our solar system, only one of these Great Cosmic Rays is operating, and its subdivisions are our seven Rays. It must not of course be supposed that our solar system is the only manifestation of that particular Logos, since each of the Seven Great Logoi may have millions of systems dependent on it."