This volume deals with the underlying structure of occult teaching for the present era and with those vast cosmic processes reproduced through all areas of life from universe to atom. A large section of the book is directed to a detailed exposition of Solar Fire, the Fire of Mind, since this is the dominant energy to be understood and controlled during this second solar system. Among other values, the book provides a compact outline of a scheme of cosmology, philosophy and psychology which serves as a basic reference and text book.