With respect to the subjects I am here going to treat of, it is not simply the result of my own reflections and convictions that I am about to offer. On the contrary, I intend to fortify my position by the opinions of many other writers; the chief of whom will, for the reasons above given, namely, that it is they who have principally attended to the question, be Germans. I am fully aware that in this country a very considerable number of persons lean to some of these opinions, and I think I might venture to assert that I have the majority on my side, as far as regards ghosts—for it is beyond a doubt that many more are disposed to believe than to confess—and those who do confess, are not few. The deep interest with which any narration of spiritual appearances bearing the stamp, or apparent stamp, of authenticity is listened to in every society, is one proof that, though the fear of ridicule may suppress, it can not extinguish that intuitive persuasion, of which almost every one is more or less conscious.
I avow, that in writing this book, I have a higher aim than merely to afford amusement. I wish to engage the earnest attention of my readers; because I am satisfied that the opinions I am about to advocate, seriously entertained, would produce very beneficial results. We are all educated in the belief of a future state, but how vague and ineffective this belief is with the majority of persons, we too well know; for although, as I have said above, the number of those who are what is called believers in ghosts and similar phenomena is very large, it is a belief that they allow to sit extremely lightly on their minds. Although they feel that the evidence from within and from without is too strong to be altogether set aside, they have never permitted themselves to weigh the significance of the facts. They are afraid of that bugbear, Superstition—a title of opprobrium which it is very convenient to attach to whatever we do not believe ourselves. They forget that nobody has a right to call any belief superstitious, till he can prove that it is unfounded. Now, no one that lives can assert that the reappearance of the dead is impossible; all he has a right to say is, that he does not believe it; and the interrogation that should immediately follow this declaration is, “Have you devoted your life to sifting all the evidence that has been adduced on the other side, from the earliest periods of history and tradition?” and even though the answer were in the affirmative, and that the investigation had been conscientiously pursued, it would be still a bold inquirer that would think himself entitled to say, the question was no longer open. But the rashness and levity with which mankind make professions of believing and disbelieving, are, all things considered, phenomena much more extraordinary than the most extraordinary ghost-story that ever was related. The truth is, that not one person in a thousand, in the proper sense of the word, believes anything; they only fancy they believe, because they have never seriously considered the meaning of the word and all that it involves. That which the human mind can not conceive of, is apt to slip from its grasp like water from the hand; and life out of the flesh falls under this category. The observation of any phenomena, therefore, which enabled us to master the idea, must necessarily be extremely beneficial; and it must be remembered, that one single thoroughly well-established instance of the reappearance of a deceased person, would not only have this effect, but that it would afford a demonstrative proof of the deepest of all our intuitions, namely, that a future life awaits us.
Not to mention the modern Germans of eminence, who have devoted themselves to this investigation, there have been men remarkable for intellect in all countries, who have considered the subject worthy of inquiry. Among the rest, Plato, Pliny, and Lucien; and in our own country, that good old divine, Dr. Henry Moore, Dr. Johnson, Addison, Isaac Taylor, and many others. It may be objected that the eternally-quoted case of Nicolai, the bookseller at Berlin, and Dr. Ferriar’s “Theory of Apparitions,” had not then settled the question; but nobody doubts that Nicolai’s was a case of disease; and he was well aware of it himself, as it appears to me, everybody so afflicted, is. I was acquainted with a poor woman, in Edinburgh, who suffered from this malady, brought on, I believe, by drinking; but she was perfectly conscious of the nature of the illusions; and that temperance and a doctor were the proper exorcists to lay the spirits. With respect to Dr. Ferriar’s book, a more shallow one was assuredly never allowed to settle any question; and his own theory can not, without the most violent straining, and the assistance of what he calls coincidences, meet even half the cases he himself adduces. That such a disease, as he describes, exists, nobody doubts; but I maintain that there are hundreds of cases on record, for which the explanation does not suffice; and if they have been instances of spectral illusion, all that remains to be said, is, that a fundamental reconstruction of the theory on that subject is demanded.
La Place says, in his “Essay on Probabilities,” that “any case, however apparently incredible, if it be a recurrent case, is as much entitled, under the laws of induction, to a fair valuation, as if it had been more probable beforehand.” Now, no one will deny that the case in question possesses this claim to investigation. Determined skeptics may, indeed, deny that there exists any well-authenticated instance of an apparition; but that, at present, can only be a mere matter of opinion; since many persons, as competent to judge as themselves, maintain the contrary; and in the meantime, I arraign their right to make this objection till they have qualified themselves to do so, by a long course of patient and honest inquiry; always remembering that every instance of error or imposition discovered and adduced, has no positive value whatever in the argument, but as regards that single instance; though it may enforce upon us the necessity of strong evidence and careful investigation. With respect to the evidence, past and present, I must be allowed here to remark on the extreme difficulty of producing it. Not to mention the acknowledged carelessness of observers and the alleged incapacity of persons to distinguish between reality and illusion, there is an exceeding shyness in most people, who, either have seen, or fancied they have seen, an apparition, to speak of it at all, except to some intimate friend; so that one gets most of the stories second-hand; while even those who are less chary of their communications, are imperative against their name and authority being given to the public. Besides this, there is a great tendency in most people, after the impression is over, to think they may have been deceived; and where there is no communication