If this is clear to the student, he will now see how it is that by limiting our conception of life to the current ideas entertained by the race, we impress these ideas on our three lower principles. It is true that these three principles are not capable of reasoning themselves, but the highest of them, the Vital Soul, has its action modified by the reasoning principle above it, and so communicates to the two lowest principles corresponding waves of vibration. And in this connection we must remember the distinction between the two systems of nerves; the voluntary system connected with the brain and forming the medium of all voluntary action, and the involuntary, or sympathetic system connected with the solar plexus and controlling all the automatic actions of the body, and thus being the agent of that continual renewal of the physical organism which is always going on, and keeps in existence for a life time a body which begins to disintegrate immediately the soul has left it.[5] Now it is through this inner Builder of the Body that our Thought re-acts upon our physical organism. The response is purely automatic, for the simple reason that there is no original thinking power in the three lower principles; the action is that of the Law as directed by Thought or Word. In this way then, it appears to me, the Personal in us acts upon the Impersonal in us; and if we assume, as I think we may, that this action takes place by means of etheric waves, we have, on general scientific principles, a clue to what we read in the Bible about the transmutation of the body. The theory of the constitution of the atom shows us that its nature is determined by the number of its particles and their rate of revolution, and that a change in the rate of revolution results in the throwing off of some of the particles. Then the number of particles being altered, there results a change in the distribution of the positive and negative charges within the sphere of the atom, since they must always exactly balance one another; and this change in the distribution of the positive and negative charges must instantly result in a corresponding change in the geometrical configuration of particles constituting the atom. That the particles automatically arrange themselves into groups of different geometrical form within the sphere of the atom, has been demonstrated both mathematically and experimentally by Professor J.J. Thompson,[6] these geometrical forms resulting of course from the balance of attraction and repulsion between the positive and negative charges of the particles.