discoveries, no two things are in more perfect unison than Hume's theory of belief in miracles, and the belief that miracles, according to the common acceptation of the term, have actually taken place. The leading principle of this theory is, in conformity with its author's law of cause and effect, that where our experience has taught us that two things follow each other as cause and effect by an unvarying sequence, if we hear of an instance in which this has not been the case, we ought to doubt the truth of the narrative. In other words, if we are told of some circumstance having taken place out of the usual order of nature, we ought not to believe it; because the circumstance of the narrator having been deceived, or of his designedly telling a falsehood, is more probable than an event contradictory to all previous authenticated experience. It is a rule for marking the boundary and proper application of the inductive system, and one that is highly serviceable to science. But, in applying it to use, we must not be led away by the narrow application, in common conversation, of the word experience. There is the experience of the common workman, and there is the experience of the philosopher. There is that observation of phenomena which makes a ditcher know that the difficulty of pulling out a loosened stone with a mattock indicates it to be so many inches thick; and that observation, fully as sure, which shows the geologist that the stratum of the Pennsylvanian grauwacke is upwards of a hundred miles thick. The experience and observation of the husbandman teach him, that when the opposite hill is distinct to his view, the intervening atmosphere is not charged with vapour; but observation, not less satisfactory, shows the astronomer that Jupiter and the Moon have around them no atmosphere such as
that by which our planet is enveloped. Now there is nothing more fully founded on experimental observation than the fact, that there was a time when the present order of the world was not in existence. That there have been convulsions, such as, did we now hear of their contemporary occurrence, instead of attesting their past existence through the sure course of observation and induction, we would at once maintain to be impossible. To this then, and this only, comes the theory of miracles, that at the present day, and for a great many years back, the accounts that are given of circumstances having taken place out of the general order of nature, are to be discredited, because between the two things to be believed, the falsehood of the narrative is more likely than the truth of the occurrence. But the very means by which we arrive at this conclusion bring us to another, that there was a time to which the rules taken from present observation of the course of nature did not apply.[283:1]
That in history, in science, in the conduct of every-day life, and particularly in the formation of the minds of the young, this rule of belief is of the highest practical utility, few will doubt. The parish clergyman, who assists in throwing discredit on all the
superstitious stories of spectres, witchcrafts, and demoniacal possessions with which his neighbourhood may be afflicted, is but an active promulgator of the doctrine. It was a narrow view that Campbell adopted when he said, that if we heard of a ferry boat, which had long crossed the stream in safety, having sunk, we would give credit to the testimony concerning it.[284:1] Our experience teaches us that ferry boats are made of perishable materials, liable to be submerged; and thus, in this case, there is no balance of incredibility against the narrator. To have tried Campbell's practical faith in Hume's theory, he should have had before him a person professing to have become aware of the sinking of the boat, by some unprecedented means of perception, called a magnetic influence, in the absence of a more distinct name; while it is shown that the same person had an opportunity of being informed, through the organs of hearing, of the circumstance which had taken place. It would then be seen, whether that sagacious philosopher would have given the sanction of his belief to a phenomenon contrary to all previous experience—the ascertainment of an external event, without the aid of the senses; or would have acceded to the too commonly illustrated
phenomenon, that human beings are capable of falsehood and folly.
It is much to be regretted that Hume employed the word miracles in the title of this inquiry. He thus employed a term which had been applied to sacred subjects, and raised a natural prejudice against reasonings, applicable to contemporary events, and to the rules of ordinary historical belief. He might have found some other title—such as, "The Principles of Belief in Human Testimony," which would have more satisfactorily explained the nature of the inquiry.
But it is not improbable that the odium thus occasioned first introduced Hume's philosophical works to controversial notoriety. Though disappointed by the silence of the public immediately on his arrival from abroad, he has soon to tell us in his "own life,"—"Meanwhile, my bookseller, A. Millar, informed me, that my former publications (all but the unfortunate Treatise) were beginning to be the subject of conversation; that the sale of them was gradually increasing, and that new editions were demanded. Answers by reverends and right reverends came out two and three in a year;[285:1] and I found, by Warburton's railing, that the books were beginning to be esteemed in good company."[285:2]
It was in the "Inquiry concerning the Human Understanding," that Hume promulgated the theory of association, which called forth so much admiration of its simplicity, beauty, and truth. "To me," he says, "there appear to be only three principles of connexion among ideas, namely, Resemblance, Contiguity in time or place, and Cause or Effect.
"That these principles serve to connect ideas, will not, I believe, be much doubted. A picture naturally leads our thoughts to the original [Resemblance.] The mention of one apartment in a building, naturally introduces an inquiry or discourse concerning the others [Contiguity:] and if we think on a wound, we can scarcely forbear reflecting on the pain which follows it [Cause and Effect.]"[286:1]
In connexion with this theory a curious charge has been brought forward by Coleridge, who says, "In consulting the excellent commentary of St. Thomas Aquinas, on the Parva Naturalia of Aristotle, I was struck at once with its close resemblance to Hume's essay on association. The main thoughts were the same in both. The order of the thoughts was the same, and even the illustrations differed only by Hume's occasional substitution of more modern examples. I mentioned the circumstance to several of my literary acquaintances, who admitted the closeness of the resemblance, and that it seemed too great to be explained by mere coincidence; but they thought it improbable that Hume should have held the pages of the angelic doctor worth turning over. But some time after, Mr. Payne of the King's Mews, showed Sir James