Further, "subjective clairvoyance is that psychic condition of a person which enables spirit intelligences to impress or photograph upon the brain of that person, at will, pictures and images which are seen as visions by that person, without the aid of the physical eye. These pictures and images may be of things spiritual or material, past or present, remote or near, hidden or uncovered, or they may have their existence simply in the conception or imagination of the spirit communicating them."
Putting aside, however, all "supernatural" explanation, let us consider how we can best account for the fact, if fact it be, of clairvoyance. What we see is this: that under given conditions the mouth of a man or woman by no means above, and often below, the intellectual average utters, and the hand writes of, matters absolutely outside the normal ken of the minds of such a man or woman. Evidence for this phenomena is, to put it bluntly, staggering. If, unknown to a living soul, your wife or sister accidentally dropped half-a-sovereign down a deep well, and whilst she was still continuing to hug her little secret to her bosom you were present at a clairvoyant sitting where the medium in a trance informed you of the circumstances, you would no doubt be astounded. Well, the manifestations of a conjurer are occasionally astounding. No matter how our reason is baffled at first, it behoves us not only to seek a natural explanation of the fact but also to ascertain and authenticate the fact itself. But a man may not implicitly trust his senses.
I soon found that merely having been a witness of a mysterious phenomenon no more qualified me for passing judgment upon it, or even furnished me with a more advantageous standpoint from which to deliver my opinions, than a man who has first seen the ocean and even tasted it can explain why it is salt. No, a man after all, unless he is equipped with unusual facilities, had best stick to the recorded testimony of the cloud of witnesses. Amongst these witnesses, who are also acute and experienced investigators, are Lord Rayleigh, Mr Balfour, Sir William Crookes, Sir Oliver Lodge, Alfred Russel Wallace, Dr Hodgson, Frederic Myers, Professor Hyslop, M. Camille Flammarion, Professor Richet, Professor William James, Professor Janet, Mr Frank Podmore and Professor Lombroso. I think it fair to assume that these men represent the white light of human intelligence of the decade. They have made a special study of the matter, and they all seem to be agreed that in the case of trance lucidity and clairvoyance the normal mind of the writer or speaker is not at work. Yet there certainly would seem to be an operating intelligence, having a special character and a special knowledge.