Up to this point it has been necessary to lay the foundations of the science by the statement of highly abstract general principles which we have reached by purely metaphysical reasoning. We now pass on to the consideration of certain natural laws which have been established by a long series of experiments and observations, the full meaning and importance of which will become clear when we see their application to the general principles which have hitherto occupied our attention. The phenomena of hypnosis are now so fully recognized as established scientific facts that it is quite superfluous to discuss the question of their credibility. Two great medical schools have been founded upon them, and in some countries they have become the subject of special legislation. The question before us at the present day is, not as to the credibility of the facts, but as to the proper inferences to be drawn from them, and a correct apprehension of these inferences is one of the most valuable aids to the mental scientist, for it confirms the conclusions of purely a priori reasoning by an array of experimental instances which places the correctness of those conclusions beyond doubt.
The great truth which the science of hypnotism has brought to light is the dual nature of the human mind. Much conflict exists between different writers as to whether this duality results from the presence of two actually separate minds in the one man, or in the action of the same mind in the employment of different functions. This is one of those distinctions without a difference which are so prolific a source of hindrance to the opening out of truth. A man must be a single individuality to be a man at all, and, so, the net result is the same whether we conceive of his varied modes of mental action as proceeding from a set of separate minds strung, so to speak, on the thread of his one individuality and each adapted to a particular use, or as varied functions of a single mind: in either case we are dealing with a single individuality, and how we may picture the wheel-work of the mental mechanism is merely a question of what picture will bring the nature of its action home to us most clearly. Therefore, as a matter of convenience, I shall in these lectures speak of this dual action as though it proceeded from two minds, an outer and an inner, and the inner mind we will call the subjective mind and the outer the objective, by which names the distinction is most frequently indicated in the literature of the subject.
A long series of careful experiments by highly trained observers, some of them men of world-wide reputation, has fully established certain remarkable differences between the action of the subjective and that of the objective mind which may be briefly stated as follows. The subjective mind is only able to reason deductively and not inductively, while the objective mind can do both. Deductive reasoning is the pure syllogism which shows why a third proposition must necessarily result if two others are assumed, but which does not help us to determine whether the two initial statements are true or not. To determine this is the province of inductive reasoning which draws its conclusions from the observation of a series of facts. The relation of the two modes of reasoning is that, first by observing a sufficient number of instances, we inductively reach the conclusion that a certain principle is of general application, and then we enter upon the deductive process by assuming the truth of this principle and determining what result must follow in a particular case on the hypothesis of its truth. Thus deductive reasoning proceeds on the assumption of the correctness of certain hypotheses or suppositions with which it sets out: it is not concerned with the truth or falsity of those suppositions, but only with the question as to what results must necessarily follow supposing them to be true. Inductive reasoning, on the other hand, is the process by which we compare a number of separate instances with one another until we see the common factor that gives rise to them all. Induction proceeds by the comparison of facts, and deduction by the application of universal principles. Now it is the deductive method only which is followed by the subjective mind. Innumerable experiments on persons in the hypnotic state have shown that the subjective mind is utterly incapable of making the selection and comparison which are necessary to the inductive process, but will accept any suggestion, however false, but having once accepted any suggestion, it is strictly logical in deducing the proper conclusions from it, and works out every suggestion to the minutest fraction of the results which flow from it.
As a consequence of this it follows that the subjective mind is entirely under the control of the objective mind. With the utmost fidelity it reproduces and works out to its final consequences whatever the objective mind impresses upon it; and the facts of hypnotism show that ideas can be impressed on the subjective mind by the objective mind of another as well as by that of its own individuality. This is a most important point, for it is on this amenability to suggestion by the thought of another that all the phenomena of healing, whether present or absent, of telepathy and the like, depend. Under the control of the practiced hypnotist the very personality of the subject becomes changed for the time being; he believes himself to be whatever the operator tells him he is: he is a swimmer breasting the waves, a bird flying in the air, a soldier in the tumult of battle, an Indian stealthily tracking his victim: in short, for the time being, he identifies himself with any personality that is impressed upon him by the will of the operator, and acts the part with inimitable accuracy. But the experiments of hypnotism go further than this, and show the existence in the subjective mind of powers far transcending any exercised by the objective mind through the medium of the physical senses; powers of thought-reading, of thought-transference, of clairvoyance, and the like, all of which are frequently manifested when the patient is brought into the higher mesmeric state; and we have thus experimental proof of the existence in ourselves of transcendental faculties the full development and conscious control of which would place us in a perfectly new sphere of life.
But it should be noted that the control must be our own and not that of any external intelligence whether in the flesh or out of it.
But perhaps the most important fact which hypnotic experiments have demonstrated is that the subjective mind is the builder of the body. The subjective entity in the patient is able to diagnose the character of the disease from which he is suffering and to point out suitable remedies, indicating a physiological knowledge exceeding that of the most highly trained physicians, and also a knowledge of the correspondences between diseased conditions of the bodily organs and the material remedies which can afford relief. And from this it is but a step further to those numerous instances in which it entirely dispenses with the use of material remedies and itself works directly on the organism, so that complete restoration to health follows as the result of the suggestions of perfect soundness made by the operator to the patient while in the hypnotic state.
Now these are facts fully established by hundreds of experiments conducted by a variety of investigators in different parts of the world, and from them we may draw two inferences of the highest importance: one, that the subjective mind is in itself absolutely impersonal, and the other that it is the builder of the body, or in other words it is the creative power in the individual. That it is impersonal in itself is shown by its readiness to assume any personality the hypnotist chooses to impress upon it; and the unavoidable inference is that its realization of personality proceeds from its association with the particular objective mind of its own individuality. Whatever personality the objective mind impresses upon it, that personality it assumes and acts up to; and since it is the builder of the body it will build up a body in correspondence with the personality thus impressed upon it. These two laws of the subjective mind form the foundation of the axiom that our body represents the aggregate of our beliefs. If our fixed belief is that the body is subject to all sorts of influences beyond our control, and that this, that, or the other symptom shows that such an uncontrollable influence is at work upon us, then this belief is impressed upon the subjective mind, which by the law of its nature accepts it without question and proceeds to fashion bodily conditions in accordance with this belief. Again, if our fixed belief is that certain material remedies are the only means of cure, then we find in this belief the foundation of all medicine. There is nothing unsound in the theory of medicine; it is the strictly logical correspondence with the measure of knowledge which those who rely on it are as yet able to assimilate, and it acts accurately in accordance with their belief that in a large number of cases medicine will do good, but also in many instances it fails. Therefore, for those who have not yet reached a more interior perception of the law of Nature, the healing agency of medicine is a most valuable aid to the alleviation of physical maladies. The error to be combated is not the belief that, in its own way, medicine is capable of doing good, but the belief that there is no higher or better way.
Then, on the same principle, if we realize that the subjective mind is the builder of the body, and that the body is subject to no influences except those which reach it through the subjective mind, then what we have to do is to impress this upon the subjective mind and habitually think of it as a fountain of perpetual Life, which is continually renovating the body by building in strong and healthy material, in the most complete independence of any influences of any sort, save those of our own desire impressed upon our own subjective mind by our own thought. When once we fully grasp these considerations we shall see that it is just as easy to externalize healthy conditions of body as the contrary. Practically the process amounts to a belief in our own power of life; and since this belief, if it be thoroughly domiciled within us, will necessarily produce a correspondingly healthy body, we should spare no pains to convince ourselves that there are sound and reasonable grounds for holding it. To afford a solid basis for this conviction is the purpose of Mental Science.