organic action? Nobody knows. My will is an immaterial force; all the faculties of my soul are immaterial; nevertheless, if I will to raise my arm, this volition overcomes matter. How does this power act? What mediation serves for the conveyance of the mental command, in order to produce a physical effect? As yet no one can answer.

Tell me how the optic nerve transmits to our mentality a vision of external objects! Tell me how thought conceives and where it resides, and of what nature is cerebral activity! Tell me…! But no! I could question you for ten years, without the greatest among you being able to solve the least of my riddles.

In this, as in the cases before adduced, we have the unknown for our problem. I am far from saying that the force brought into play in these phenomena can some day be employed like electricity or steam. Such a notion would be neither more nor less than absurd! Nevertheless, though differing essentially from those, occult force is not the less real.

Several years ago I designated this unknown force by the title psychical. This designation may well be retained.

Can we not find the happy medium between absolute negation and dangerous credulity? Is it reasonable either to deny everything we do not comprehend, or to accept all the fantasies engendered in the vortex of disordered imaginations? Can we not achieve at the same time the humility which becomes the weak and the dignity which befits the strong?

I conclude this statement as I began it, by declaring that it is not in favor of the Davenport Brothers that I plead; nor do I take up the gauntlet for any sect, for any group of people, or for any person whatsoever; but I contend in behalf of certain facts, of whose validity I was convinced years ago, though without understanding their cause.

I beg the reader to excuse the length of this citation; but it seems to me to serve so naturally as an introduction to this present inquiry that even to-day, after a lapse of a quarter-century, I really see no important changes to be made in this old declaration, except to add that it now appears to me to have been rather audacious on the part of a man so very young, and that it forthwith won him many hearty enemies among the elect of science.

The experimental method is bound to conquer here, as everywhere. Let us, then, without partisanship, study the question under its divers aspects.

1

“The immortality of the soul is a matter so important,” writes Pascal, “that one must have lost all moral sensibility if he remains indifferent as to its nature.”

Why should we give up the hope of ever arriving at a knowledge of the nature of the thinking principle which animates us, and of ascertaining whether or not it outlives the destruction of the body? It must be admitted that hitherto science has taught us nothing on this fundamental subject. Is this any reason for renouncing the study of the problem? On this, as on many other points, we are not of the same mind as those material Positivists who declare themselves satisfied with not knowing anything. We think, on the contrary, that we should attack the problem by all methods, and not neglect a single hint which may aid the solution.

Personally, I declare that I have not yet discovered for myself one fact which proves with certainty the existence of soul as separate from body. Otherwise, however sublime astronomical science may be,—though it stand at the head of human researches, as the first, the most important, and the most widespread of all sciences,—I avow that, if the inductive method had permitted me to penetrate secrets of existence, I should inevitably have abandoned the science of the firmament, for that which would have dethroned the other through its prime and unequalled importance; since it would be superfluous for us to evade the fact that the gravest and most interesting of all questions, to ourselves, is that of our continuous personal existence. The existence of God, of the entire universe, touches us far less intimately. If we ever cease to live (for what is the span of a human life in the light of eternity!) it is a matter of utter indifference to us whether other things exist or not. Doubtless this reasoning is severely egotistic! Ah, how can it be otherwise?

If we have no clear and irrefutable proofs, we have still the aid of a goodly number of observations, establishing the conclusion that we are compassed about by a set of phenomena, and by powers differing from the physical order commonly observed day by day; and these phenomena urge us to pursue every line of investigation, having for its end a psychical acquaintance with human nature.

Let us begin at the beginning, with a recital of observations which, from their very nature, have the disadvantage of being very personal.

2

At the age of sixteen, on my way home one day from the Paris Observatory, I noticed, on the bookseller’s stand in the Galeries de l’Odeon, a green-covered volume entitled Le Livre des Esprits (Book of Spirits), by Allan-Kardec. I bought it, and read it through at a sitting. There was in it something unexpected, original, curious. Were they true, the phenomena therein recounted? Did they solve the great problem of futurity, as the author contended? In my anxiety to ascertain this I made the acquaintance of the high-priest, for Allan-Kardec had made of Spiritism a veritable religion. I assisted at the séances. I experimented and became myself a medium. In one of Allan-Kardec’s works, called Genesis, over the signature of Galilee, may be read a whole chapter on Cosmogony, which I wrote in a mediumistic condition.

I was at that time connected with the principal circles in Paris where these experiments were tried, and for two years I even filled the exacting position of secretary to one of these circles, an office which morally bound me not to be absent from a single séance.

Communications were received in three different ways: by writing with our own hands; by placing our hands upon planchette, in which a pencil was placed which did the writing; by raps beneath the table, or by movements which indicated certain letters, when the alphabet was repeated aloud by one of the sitters.

The first method was the only one in use in the Society for Spiritualist Study presided over by Allan-Kardec; but it is the method leaving the widest margin for doubt. Indeed, at the end of several years of experimenting in this fashion, the result was that I became skeptical even of myself, and for the reasons following.

It cannot be denied that, under mediumistic conditions, one does not write in his usual fashion. In the normal state, when we wish to write a sentence, we mentally construct that sentence—if not the whole of it, at least a part of it—before writing the words. The pen and hand obey the creative thought. It is not so when one writes mediumistically. One rests one’s hand, motionless but docile, on a sheet of paper, and then waits. After a little while the hand begins to move, and to form letters, words, and phrases. One does not create these sentences, as in the normal state, but waits for them to produce themselves. Yet the mind is nevertheless associated therewith. The subject treated is in unison with one’s ordinary ideas. The written language is one’s own. If one is deficient in orthography, the composition will betray this fault. Moreover, the mind is so intimately connected with what is written, that if it ponders something else, if the thoughts are allowed to wander from the immediate subject, then the hand will pause, or trace incoherent signs.

Such is the state of the writing-medium,—at least, so far as I have observed it in myself. It is a sort of auto-suggestive state. We are assured there are mediums who