Modern exoteric science has proved the ancient and fundamental esoteric axiom: there is nothing in the whole of the manifested universe but energies, in some relationship, each vibrating at a particular frequency. The esoteric science postulates seven such streams of energy or rays, whose interaction, at every conceivable frequency, creates the solar systems, galaxies and universes. The movement of these seven rays of energy, in spiralling cycles, draws all Being into and out of manifestation, and colours and saturates it with their own individual qualities and attributes. This is as true for a grain of sand as for a man or a solar system. Each is the expression of a Life. As far as our own solar system is concerned, these seven energies are the expression of seven great Lives embodied by seven stars in the constellation of the Great Bear.
In our system, one of these rays, the 2nd ray, is focused. The other six rays are therefore sub-rays of this basic ray. The manipulation of these subdivisions by our Solar Logos creates every variation of life within His system. So complex is the subject of the rays, so pervasive and all-embracing is their influence, that it will be possible in this article to skim the surface of their action only, and to show something of their relevance to our lives and relationships. The aim will be to demonstrate the value of knowing the qualities of the rays governing ourselves and our nations and in this way to stimulate the reader to enter into a deeper study of these forces which, on every plane, condition our nature and make us what we are.
The rays are particular types of energy, the emphasis being on the quality which that energy demonstrates rather than on the form which it creates. To say that a man or a nation or a planet is `on' the 1st or 2nd ray, is to say that they are coloured by, and express the quality of, that ray. Consequently, there are seven ray-types of people, and the idea of the septenate is to be found at many levels and in many branches of our lives: "the seventh son of a seventh son," "the seven sacred Planets." "Seven is a number in magic," as Dylan Thomas put it. (Spiritual.com)