"Strictly speaking, I am unaware of anything that has a right to the t.i.tle of an impossibility, except a contradiction in terms. There are impossibilities logical, but none natural. A 'round square', a 'present past', 'two parallel lines that intersect', are impossibilities, because the ideas denoted by the predicates round, present, intersect, are contradictory of the ideas denoted by the subjects square, past, parallel. But walking on water, or turning water into wine, are plainly not impossibilities in this sense".

No alleged occurrence can be ruled out as impossible, then, unless the statement is self-contradictory. Difficulty of belief is no reason. It was found difficult to believe in Antipodes; if there were people on the under side of the earth, "they would fall off". But the advance of knowledge made it not only credible but quite comprehensible. People stick on, all over the earth, because the earth attracts them more powerfully than anything else does. Similarly with some miracles. They may seem much more credible and comprehensible when we have learned more. Indeed, the wonders of wireless telegraphy, radio-activity, and aviation are intrinsically as miraculous as many of the stories in the world's sacred writings.

This is not saying, however, that we are to believe the latter _en bloc_. They must be taken individually, and believed or disbelieved according to the evidence and according to the antecedent probability or improbability. The standing still of the sun (_Joshua_, x) does not seem credible to the scientific mind which knows that the earth is spinning at the equator at the rate of one thousand miles an hour and that any sudden interference with that rotation would send it to smithereens, with all the creatures on its surface. Of course, a Being who could stop its rotation could perhaps also prevent it from flying to smithereens; but we have to extend the miracle in so many entirely hypothetical ways that the whole thing becomes too dubious for acceptance. It is simpler to look on the story as a myth.

But such things as the clairvoyance of Samuel (I _Samuel_, x), and even the Woman of Endor story, are quite in line with what psychical research is now establishing. And the healing miracles of Jesus are paralleled, in kind if not in degree, by innumerable "suggestive therapeutic" doctors. Sh.e.l.l-shock blindness and paralysis are cured at Seale Hayne Hospital and elsewhere in very "miraculous" fashion. And turning water into wine is not more wonderful than turning radium into helium, and helium into lead, which nature is now doing before our eyes. These things, therefore, have become credible, if the evidence is good enough. Whether evidence nineteen hundred years old can be good enough to take as the basis of serious belief is another matter.

Scientific method insists on a high standard of evidence. We must be honest with ourselves, and not believe unless the evidence satisfies our intellectual requirements. But the modern and wise tendency is to regard religion as an att.i.tude rather than as a belief or system of beliefs. It does not stand or fall with the miracle-stories.

THE TRUTH ABOUT TELEPATHY

The amount of nonsense that is talked, and apparently widely believed, about telepathy, is almost enough to make one wish that the phenomenon had not been discovered, or the word invented. Without any adequate basis of real knowledge, the "man in the street" seems to be accepting the idea of thought-transference as an incontrovertible fact, like wireless telegraphy--which latter is responsible for a good deal of easy credence accorded to the former, both seeming equally wonderful. But the a.n.a.logy is a false one. There is a great deal of difference between the two. In wireless telegraphy we understand the process: it is a shaking of the ether into pulses or waves, which act on the coherer in a perfectly definite way and are measurable. But in spite of much loose talk about "brain-waves", the fact is that we know of no such thing.

Indeed, there is reason to believe that telepathy, if it is a fact at all--and I believe it is--may turn out to be a process of a different kind, the nature of which is at present unknown. For one thing, it does not seem to conform to physical laws. If it were an affair of ripples in the ether--like wireless telegraphy--the strength of impact would vary in inverse ratio with the square of the distance. The influence would weaken at a known rate, as more and more distance intervened between sender and recipient. And this, in many cases at least, is not found to be so, consequently Mr Gerald Balfour and other leading members of the Society for Psychical Research incline to the opinion that the transmission is not a physical process, but takes place in the spiritual world.

I have said that I believe in telepathy, yet I have deprecated too-ready credence. What, then, are the facts?

The first attempt at serious investigation of alleged supernormal phenomena by an organised body of qualified observers was made by the London Society for Psychical Research, which was founded in 1882 by Henry Sidgwick (Professor of Moral Philosophy at Cambridge), F. W. H.

Myers and Edmund Gurney (Fellows of Trinity), W. F. Barrett (Professor of Experimental Physics at Dublin, and now Sir William), and a few friends. The membership grew, and the list now includes the most famous scientific names throughout the civilised world. In point of prestige, the society is one of the strongest in existence.

The first important work undertaken was the collection of a large number of cases of apparition, etc., in which there seemed to be some supernormal agency at work, conveying knowledge; as in the case of Lord Brougham, who saw an apparition of his friend at the moment of the latter's death. The results of this investigation were embodied in the two stout volumes called _Phantasms of the Living_ (now out of print, but an abridged one-volume edition has recently been edited by Mrs Sidgwick (Kegan Paul, Trench, Trubner & Co., Ltd., 1919), and in Vol. x. of the _Proceedings_ of the Society. As the outcome of this arduous investigation, involving the collection and consideration of about 17,000 cases and extending over several years of time, the committee made the cautious but memorable statement that "Between deaths and apparitions of the dying person a connexion exists which is not due to chance alone". This guarded statement was carefully worded in order to avoid committing the society to any definite (_e.g._ spiritualistic) interpretation. Some of the apparitions occurred within twelve hours before the death, some at the time of death, and some a few hours afterwards. But these latter of course do not prove "spirit-agency"--though indeed sometimes they seem to render it probable--for the telepathic impulse or thought may have been sent out by the dying person, remaining latent--so to speak--until the percipient happened to be in a sufficiently pa.s.sive and receptive state to "take it in".

Definite experimentation was also made, of various kinds, _e.g._, one person would be shown a card or diagram, and another (blindfolded) would maintain a pa.s.sive mind, saying aloud what ideas "came into his head".

Some of these experiments--which are still required and should be tried by those interested in the subject--indicated that the concentration of A's mind did indeed sometimes produce a reverberation in the mind of B.

In a series conducted by Sir Oliver Lodge, the odds against the successes being due to chance can be mathematically shown to be ten millions to one.

For this new fact or agency, Mr Myers invented the word "telepathy"

(Greek _tele_, at a distance, and _pathein_, to feel), and defined it as "communication of impressions of any kind from one mind to another, independently of the recognised channels of sense".

But I wish to say, and to emphasise the statement, that this transmission, though regarded as highly probable by many acute minds, cannot yet be regarded as unquestionably proved, still less as occurring in a common or frequent way. We have all of us known somebody who claimed to be able to make people turn round in church or in the street by "willing" them, but usually these claims cannot be substantiated.

It is difficult to eliminate chance coincidence. And the folks who lay claim to these powers are usually of a mystery-loving, inaccurate build of mind, and therefore very unsafe guides. Moreover, how many times have they "willed" without result?

One reason why I deprecate easy credence, leaning to the sceptical side though believing that the thing sometimes happens, is, that there is danger of a return to superst.i.tion, if belief outruns the evidence.

If the popular mind gets the notion that telepathy is more or less a constant occurrence--that mind can influence mind whenever it likes--there is a possibility of a return to the witchcraft belief which resulted in so many poor old women being burnt at the stake in the seventeenth century. I prefer excessive disbelief to excessive credulity in these things; it at least does not burn old women because they have a squint and a black cat and a grievance against someone who happens to have fallen ill. Unbalanced minds are very ready to believe that someone is influencing them. I have received quite a number of letters from people (not spiritualists) who, knowing of my interest in these matters, got it into their foolish heads that I was trying some sort of telepathic black magic on them. I had not even been thinking about them.

It was entirely their own imagination. One of these people is now in an asylum. I think she would probably have become insane in any case--if not on this, then on some other subject--but these incidents almost make me wish that we could confine the investigation and discussion of the subject to our own circle or society until education has developed more balanced judgment in the ma.s.ses. But of course such a restriction is impossible. The daily press and the sensational novelists have got hold of the idea. We must counteract the sensational exaggerations, which have such a bad effect on unbalanced minds, by stating the bare, hard facts. Here, as elsewhere, a little knowledge is a dangerous thing. It is the half-informed people who are endangered. The remedy is more knowledge. Let them learn that, though there is reason to believe that under certain conditions telepathy is possible and real, there is nevertheless no scientific evidence for anything in the nature of "bewitching", or telepathy of maleficent kind. This cannot be too strongly insisted on. Let us follow the facts with an open mind, but let us be careful not to rush beyond them into superst.i.tion.

THE TRUTH ABOUT HYPNOTISM

Various popular novelists, such as George Du Maurier in _Trilby_, and E. F. Benson in _The Image in the Sand_, have taken advantage of the possibilities which hypnotic marvels offer to the sensational writer, and have put into circulation a variety of exaggerated ideas. This is regrettable. Of course the novelist can choose his subject, and can treat it as he likes; it is the public's fault if it takes fiction for fact, or allows its notions of fact to be coloured or in any way influenced by what is avowedly no more than fiction.

But it is certain that it is thus influenced. It is therefore desirable that the public should be told from time to time exactly what the scientific position is--what the conclusions are, of those who are studying the subject in a proper scientific spirit, with no aim save the finding of truth. This will at least enable the public to discriminate between fact and fiction, if it wants to.

No doubt the phenomena in question have been often discovered, forgotten, and rediscovered; but in modern times the movement dates from Mesmer. Friedrich Anton Mesmer was born about 1733 or 1734. In 1766 he took his doctor's degree at Vienna, but did not come into public notice until 1773. In that year he employed in the treatment of patients certain magnetic plates, the invention of Father h.e.l.l, a Jesuit, professor of astronomy at Vienna.

Further experiments led him to believe that the human body is a kind of magnet; and that its effluent forces could be employed, like those of the metal plates, in the cure of disease. Between 1773 and 1778 he travelled extensively in Europe, with a view to making his discoveries better known. Also he sent an account of his system to the princ.i.p.al learned bodies of Europe, including the Royal Society of London, the Academy of Sciences at Paris, and the Academy at Berlin.

The last alone deigned to reply; they told him his discovery was an illusion. Apparently they knew all about it, without investigating.

There is no dogmatism so unqualified, no certainty so c.o.c.ksure, as that of complete ignorance.

The method at first was probably a system of magnetic pa.s.ses or strokings of the diseased part by the hand of the doctor. But, as the patients increased in number, a more wholesale method had to be devised.

Consequently Mesmer invented the famous "_baquet_". This was a large tub, filled with bottles of water previously "magnetised" by Mesmer.

The bottles were arranged to radiate from the centre, some of them with necks pointing away from it and some pointing towards it. They rested on powdered gla.s.s and iron filings, and the tub itself was filled with water. In short, it was a sort of glorified travesty of a galvanic battery. From it, long iron rods, jointed and movable, protruded through holes in the lid. These the patients held, or applied to the region of their disease, as they sat in a circle round the _baquet_. Mesmer and his a.s.sistants walked about, supplementing the treatment by pointing with the fingers, or with iron rods, at the diseased parts.

All this may seem, at first sight, very absurd. But the fact remains that Mesmer certainly wrought cures. And apparently he frequently succeeded in curing or greatly alleviating, where other doctors had completely failed. It is no longer possible for any instructed person to regard Mesmer as a charlatan who knowingly deluded the public for his own profit. His theories may have been partly mistaken, but his practical results were indubitable.

It is also worth noting that he treated rich and poor alike, charging the latter no fee. He was a man of great tenderness and kindness of heart, devoted to the cause of the sick and suffering; and the accounts of his patients show the unbounded grat.i.tude which they felt towards him, and the respect in which he was held.

The orthodox doctors, of course, felt otherwise. They were envious and jealous of the foreign innovator and his success. And his fame was too great to allow of his being ignored. Consequently the Royal Society of Medicine (Paris) appointed a commission to inquire into the new treatment. The finding, of course, was adverse. The investigators could not deny the cures, but they fell back on the recuperative force of nature (_vis medicatrix naturae_) and denied that Mesmer's treatment caused the cure.

Obviously, Mesmer, having treated his patients, could not prove that they would not have recovered if he had _not_ treated them; so his critics had a strong position. But, on the other hand, neither can an orthodox doctor prove that _his_ cures are due to _his_ treatment. If it is _vis medicatrix naturae_ in one case, it may be the same in the other.

Modern medicine is more and more coming to this conclusion--is abandoning drugging as it abandoned bleeding and cautery, and is leaving the patient to nature. This is a significant fact.

But there is good reason to believe that Mesmer's treatment was a real factor in his cures, for in many cases the patient had been treated by orthodox methods for years without effect. Perhaps, as the doctors said, it was "only the recuperative force of Nature", but if the doctors could not set that force to work, and Mesmer somehow could, he is just as much ent.i.tled to the credit of the cure as if he had done it by bleeding or drugging. However, by one sort of persecution or another, he was driven out of Paris, and more or less discredited. After a visit to England, he retired to Switzerland, where he lived in obscurity until his death in 1815.

The method was kept alive by various disciples, such as the Marquis de Puysegur, Dupotet, Deleuze, and many more, but in an amateurish sort of way. The first-named found that in one of his patients he could induce a trance state which showed peculiar features. In trance, the man knew all that he knew when awake, but when awake he knew nothing of what had happened in trance. This second condition thus seemed to be equivalent to an enlargement of personality.

Both in England and France the medical side came to the front again, in the hands of Braid (a Manchester surgeon who first used the term "hypnotism", from Greek _hypnos_, sleep, and whose book _Neurypnology, or the Rationale of Nervous Sleep_ was published in 1843), Liebeault, Bernheim, Elliotson, and Esdaile.

Elliotson and Esdaile still believed in a magnetic effluence, but the idea was given up by Braid and the "Nancy school" (the investigators who followed the lines of Liebeault of Nancy), for it was found that patients could be hypnotised without pa.s.ses or strokings or any manipulation. Braid told his patients to gaze fixedly at a bright object, _e.g._, his lancet. Liebeault produced sleep by talking soothingly or commandingly filling the patient's mind with the idea of sleep. In some cases it was found that patients could hypnotise themselves by an effort of will (this was confirmed more recently by Dr Wingfield's experiments with athletic undergraduates at Cambridge), and this disposed of the hitherto supposedly necessary "magnetic effluence"

from the operator.

The most modern opinion is pretty much the same. Dr Tuckey, who learnt his method from Liebeault himself, and who practised for twenty years in the West End of London, is convinced that the whole thing is suggestion.

So is Dr Bramwell, who shares with Dr Tuckey the leading position among hypnotic pract.i.tioners in England. The latter, it may be remarked, was the first qualified medical man to write an important book on the subject in English, after Braid.

The tendency now is to give suggestions without attempting to induce actual trance. It is found with many patients that if they will make their minds pa.s.sive and receptive, listening to the doctor's suggestions in an absent-minded sort of way, those suggestions--that the health shall improve and the specified symptoms disappear--are carried out. The explanation of this is "wrapped in mystery". No one knows exactly how it comes about. But it seems to be somewhat thus:

The complicated happenings within our bodies, such as the chemical phenomena known as digestion and the physical phenomena such as blood circulation and contraction of involuntary muscles, seem to imply intelligence, though that intelligence is not part of the conscious mind, for we do not consciously direct the processes. They go on all the same--for example--when we are asleep. Presumably, then, there is a mental Something in us, which never sleeps, and which runs the organic machinery. If we could get at this Something, and give it instructions, a part of the machinery which is working wrongly might get attended to and put right. Unfortunately, the ordinary consciousness is in the way.

We cannot get at the mechanic in the mill, because we have to go through the office, and the managing director keeps us talking.

Well, in hypnotic trance, or even in the preoccupied "absent-minded"

state, we get past the managing director--who is asleep or attending to something else--into the mill. We get at the man who really attends to the machinery. We get past the normal consciousness, and can give our orders to the "subconscious" or "subliminal"--which means "below the threshold". In Myers' phrase, suggestion is a "successful appeal to the subliminal self", but exactly how it comes about, and why the patient usually cannot do it for himself but has to have the suggestion administered by a doctor, we do not know.

Of course the word "suggestion" does not really explain anything. It is a word employed to cover our ignorance. Suggestive methods are as empirical as Mesmer's. In each case a successful appeal is made to the recuperative forces of nature, _vis medicatrix naturae_; but exactly how or why suggestion does it, we know no more--or hardly any more--than we know how and why Mesmer's _baquet_ did it. The fact remains, however, that the thing is done. What we lack is only a satisfactory theory.

At one time it was thought that only functional disorders could be relieved. But it is now recognised that the line between functional and organic is an arbitrary one. If we cannot find definite organic change in tissue, we call the ailment functional; but nevertheless some change there must be, though microscopic or unreachable.

Consequently even functional disorders are at bottom organic; and, though of course grave lesions produce the gravest disorders, there is no _a priori_ impossibility in a hypnotic cure of even the most radical tissue-degeneration.

However, as a matter of practical fact, the "mechanic" has his limitations, like the normal consciousness. He is not omnipotent.

Consequently we cannot be sure of being able to stimulate him to the extent of a cure. It depends on his knowledge and power. But he can always do something, if we can get at him. The chief difficulty is that in many people he is inaccessible.