The Unseen World and Other Essays [18]
is accompanied by a molecular motion in the cells and fibres of the brain; and materialists have found great comfort in this fact, while theologians and persons of little faith have been very much frightened by it. But since no one ever pretended that thought can go on, under the conditions of the present life, without a brain, one finds it rather hard to sympathize either with the self-congratulations of Dr. Buchner's disciples[8] or with the terrors of their opponents. But what has been less commonly remarked is the fact that when the thought and the molecular movement thus occur simultaneously, in no scientific sense is the thought the product of the molecular movement. The sun-derived energy of motion latent in the food we eat is variously transformed within the organism, until some of it appears as the motion of the molecules of a little globule of nerve-matter in the brain. In a rough way we might thus say that the chemical energy of the food indirectly produces the motion of these little nerve-molecules. But does this motion of nerve-molecules now produce a thought or state of consciousness? By no means. It simply produces some other motion of nerve-molecules, and this in turn produces motion of contraction or expansion in some muscle, or becomes transformed into the chemical energy of some secreting gland. At no point in the whole circuit does a unit of motion disappear as motion to reappear as a unit of consciousness. The physical process is complete in itself, and the thought does not enter into it. All that we can say is, that the occurrence of the thought is simultaneous with that part of the physical process which consists of a molecular movement in the brain.[9] To be sure, the thought is always there when summoned, but it stands outside the dynamic circuit, as something utterly alien from and incomparable with the events which summon it. No doubt, as Professor Tyndall observes, if we knew exhaustively the physical state of the brain, "the corresponding thought or feeling might be inferred; or, given the thought or feeling, the corresponding state of the brain might be inferred. But how inferred? It would be at bottom not a case of logical inference at all, but of empirical association. You may reply that many of the inferences of science are of this character; the inference, for example, that an electric current of a given direction will deflect a magnetic needle in a definite way; but the cases differ in this, that the passage from the current to the needle, if not demonstrable, is thinkable, and that we entertain no doubt as to the final mechanical solution of the problem. But the passage from the physics of the brain to the corresponding facts of consciousness is unthinkable. Granted that a definite thought and a definite molecular action in the brain occur simultaneously; we do not possess the intellectual organ, nor apparently any rudiment of the organ, which would enable us to pass by a process of reasoning from the one to the other. They appear together, but we do not know why."[10]
[8] The Nation once wittily described these people as "people who believe that they are going to die like the beasts, and who congratulate themselves that they are going to die like the beasts."
[9] For a fuller exposition of this point, see my Outlines of Cosmic Philosophy, Vol. II. pp. 436-445.
[10] Fragments of Science, p. 119.
An unseen world consisting of purely psychical or spiritual phenomena would accordingly be demarcated by an absolute gulf from what we call the material universe, but would not necessarily be discontinuous with the psychical phenomena which we find manifested in connection with the world of matter. The transfer of matter, or physical energy, or anything else that is quantitatively measurable, into such an unseen world, may be set down as impossible, by reason of the very definition of such a world. Any hypothesis which should assume such a transfer would involve a contradiction in terms. But the hypothesis of a survival of present psychical phenomena in such a world, after being denuded
[8] The Nation once wittily described these people as "people who believe that they are going to die like the beasts, and who congratulate themselves that they are going to die like the beasts."
[9] For a fuller exposition of this point, see my Outlines of Cosmic Philosophy, Vol. II. pp. 436-445.
[10] Fragments of Science, p. 119.
An unseen world consisting of purely psychical or spiritual phenomena would accordingly be demarcated by an absolute gulf from what we call the material universe, but would not necessarily be discontinuous with the psychical phenomena which we find manifested in connection with the world of matter. The transfer of matter, or physical energy, or anything else that is quantitatively measurable, into such an unseen world, may be set down as impossible, by reason of the very definition of such a world. Any hypothesis which should assume such a transfer would involve a contradiction in terms. But the hypothesis of a survival of present psychical phenomena in such a world, after being denuded