"We all have a unique energy signature made of these. The analogy is of the 'monad' that splits Gods white light into it's constituents. The monad is like a prism which serves as an interface between our soul and that of the creator. There are other temperament systems, like astrology(12 temperaments), Kabbalah Seraphot(10), enneagram (9) but I like the ray system for it's simplicity and relation to music."