67: Subba Rao says in Five Years of Theosophy, page 102:  "As a general rule, whenever seven entities are mentioned in the ancient occult science of India in any connection whatsoever, you must suppose that those seven entities came into existence from three primary entities; and that these three entities, again, are evolved out of a single entity or monad.  To take a familiar example, the seven coloured rays in the solar ray are evolved out of three primary coloured rays; and the three primary colours coexist with the four secondary colours in the solar ray.  Similarly the three primary entities which brought man into existence coexist in him with the four secondary entities which arose from different combinations of the three primary entities."  Read also S. D., I, 190, 191.