This works in the same way as the human mind, which contains various powers. The functioning of the mind is marked by ever-renewed excitement in the form of the new thoughts or new levels of understanding that enter the mind. (The new thought comes in the wake of the excitement produced by the previous thought, although the new thought is not actually caused by it. So too in the case of the overall developmental chain: the Source of all the lights is indeed in the Supreme Will, but they are revealed in stages, one after the other, because the eternal Will continually creates everything.)