Stretching between the Trinity and humanity are many grades and hierarchies of invisible beings; the highest of these are the seven Spirits of God, the seven Fires, or Flames, that are before the throne of God.[328] Each of these stands at the head of a vast host of Intelligences, all of whom share His nature and act under His direction; these are themselves graded, and are the Thrones, Powers, Princes, Dominations, Archangels, Angels, of whom mention is found in the writings of the Christian Fathers, who were versed in the Mysteries. Thus there are seven great hosts of these Beings, and they represent in their intelligence the divine Mind in Nature. They are found in all regions, and they ensoul the energies of Nature. From the standpoint of occultism there is no dead force and no dead matter. Force and matter alike are living and active, and an energy or a group of energies is the veil of an Intelligence, of a Consciousness, who has that energy as his outer expression, and the matter in which that energy moves yields a form which he guides or ensouls. Unless a man can thus look at Nature all esoteric teaching must remain for him a sealed book. Without these angelic Lives, these countless invisible Intelligences, these Consciousnesses which ensoul the force and matter[329] which is Nature, Nature herself would not only remain unintelligible, but she would be out of relation alike to the divine Life that moves within and around her, and to the human lives that are developing in her midst. These innumerable Angels link the worlds together; they are themselves evolving while helping the evolution of beings lower than themselves, and a new light is shed on evolution when we see that men form grades in these hierarchies of intelligent beings. These angels are the "sons of God" of an earlier birth than ours, who "shouted for joy"[330] when the foundations of the earth were laid amid the choiring of the Morning Stars. Others beings are below us in evolution--animals, plants, minerals, and elemental lives--as the Angels are above us; and as we thus study, a conception dawns upon us of a vast Wheel of Life, of numberless existences, inter-related and necessary each to each, man as a living Intelligence, as a self-conscious being, having his own place in this Wheel. The Wheel is ever turning by the divine Will, and the living Intelligences who form it learn to co-operate with that Will, and if in the action of those Intelligences there is any break or gap due to neglect or opposition, then the Wheel drags, turning slowly, and the chariot of the evolution of the worlds goes but heavily upon its way.