It is certain that the sentiment of mystery has not been without a considerable importance in certain religions, notably in Christianity. It must also be said that the importance of this sentiment has varied remarkably at different moments in the history of Christianity. There are periods when this notion passes to an inferior place, and is even effaced. For example, for the Christians of the seventeenth century, dogma had nothing disturbing for the reason; faith reconciled itself easily with science and philosophy, and the thinkers, such as Pascal, who really felt that there is something profoundly obscure in things, were so little in harmony with their age that they remained misunderstood by their contemporaries.[29] It would appear somewhat hasty, therefore, to make an idea subject to parallel eclipses, the essential element of even the Christian religion.
In all events, it is certain that this idea does not appear until late in the history of religions; it is completely foreign, not only to those peoples who are called primitive, but also to all others who have not attained a considerable degree of intellectual culture. When we see them attribute extraordinary virtues to insignificant objects, and people the universe with singular principles, made up of the most diverse elements and endowed with a sort of ubiquity which is hardly representable, we are undoubtedly prone to find an air of mystery in these conceptions. It seems to us that these men would have been willing to resign themselves to these ideas, so disturbing for our modern reason, only because of their inability to find others which were more rational. But, as a matter of fact, these explanations which surprise us so much, appear to the primitive man as the simplest in the world. He does not regard them as a sort of ultima ratio to which the intellect resigns itself only in despair of others, but rather as the most obvious manner of representing and understanding what he sees about him. For him there is nothing strange in the fact that by a mere word or gesture one is able to command the elements, retard or precipitate the motion of the stars, bring rain or cause it to cease, etc. The rites which he employs to assure the fertility of the soil or the fecundity of the animal species on which he is nourished do not appear more irrational to his eyes than the technical processes of which our agriculturists make use, for the same object, do to ours. The powers which he puts into play by these diverse means do not seem to him to have anything especially mysterious about them. Undoubtedly these forces are different from those which the modern scientist thinks of, and whose use he teaches us; they have a different way of acting, and do not allow themselves to be directed in the same manner; but for those who believe in them, they are no more unintelligible than are gravitation and electricity for the physicist of to-day. Moreover, we shall see, in the course of this work, that the idea of physical forces is very probably derived from that of religious forces; then there cannot exist between the two the abyss which separates the rational from the irrational. Even the fact that religious forces are frequently conceived under the form of spiritual beings or conscious wills, is no proof of their irrationality. The reason has no repugnance a priori to admitting that the so-called inanimate bodies should be directed by intelligences, just as the human body is, though contemporary science accommodates itself with difficulty to this hypothesis. When Leibniz proposed to conceive the external world as an immense society of minds, between which there were, and could be, only spiritual relations, he thought he was working as a rationalist, and saw nothing in this universal animism which could be offensive to the intellect.
Moreover, the idea of the supernatural, as we understand it, dates only from to-day; in fact, it presupposes the contrary idea, of which it is the negation; but this idea is not at all primitive. In order to say that certain things are supernatural, it is necessary to have the sentiment that a natural order of things exists, that is to say, that the phenomena of the universe are bound together by necessary relations, called laws. When this principle has once been admitted, all that is contrary to these laws must necessarily appear to be outside of nature, and consequently, of reason; for what is natural in this sense of the word, is also rational, these necessary relations only expressing the manner in which things are logically related. But this idea of universal determinism is of recent origin; even the greatest thinkers of classical antiquity never succeeded in becoming fully conscious of it. It is a conquest of the positive sciences; it is the postulate upon which they repose and which they have proved by their progress. Now as long as this was lacking or insufficiently established, the most marvellous events contained nothing which did not appear perfectly conceivable. So long as men did not know the immutability and the inflexibility of the order of things, and so long as they saw there the work of contingent wills, they found it natural that either these wills or others could modify them arbitrarily. That is why the miraculous interventions which the ancients attributed to their gods were not to their eyes miracles in the modern acceptation of the term. For them, they were beautiful, rare or terrible spectacles, or causes of surprise and marvel (θαύματα, mirabilia, miracula); but they never saw in them glimpses of a mysterious world into which the reason cannot penetrate.
We can understand this mentality the better since it has not yet completely disappeared from our midst. If the principle of determinism is solidly established to-day in the physical and natural sciences, it is only a century ago that it was first introduced into the social sciences, and its authority there is still contested. There are only a small number of minds which are strongly penetrated with this idea that societies are subject to natural laws and form a kingdom of nature. It follows that veritable miracles are believed to be possible there. It is admitted, for example, that a legislator can create an institution out of nothing by a mere injunction of its will, or transform one social system into another, just as the believers in so many religions have held that the divine will created the world out of nothing, or can arbitrarily transmute one thing into another. As far as social facts are concerned, we still have the mentality of primitives. However, if so many of our contemporaries still retain this antiquated conception for sociological affairs, it is not because the life of societies appears obscure and mysterious to them; on the contrary, if they are so easily contented with these explanations, and if they are so obstinate in their illusions which experience constantly belies, it is because social events seem to them the clearest thing in the world; it is because they have not yet realized their real obscurity; it is because they have not yet recognized the necessity of resorting to the laborious methods of the natural sciences to gradually scatter the darkness. The same state of mind is found at the root of many religious beliefs which surprise us by their pseudo-simplicity. It is science and not religion which has taught men that things are complex and difficult to understand.
But the human mind, says Jevons,[30] has no need of a properly scientific culture to notice that determined sequences, or a constant order of succession, exist between facts, or to observe, on the other hand, that this order is frequently upset. It sometimes happens that the sun is suddenly eclipsed, that rain fails at the time when it is expected, that the moon is slow to reappear after its periodical disappearance, etc. Since these events are outside the ordinary course of affairs, they are attributed to extraordinary exceptional causes, that is to say, in fine, to extra-natural causes. It is under this form that the idea of the supernatural is born at the very outset of history, and from this moment, according to this author, religious thought finds itself provided with its proper subject.
But in the first place, the supernatural cannot be reduced to the unforeseen. The new is a part of nature just as well as its contrary. If we state that in general, phenomena succeed one another in a determined order, we observe equally well that this order is only approximative, that it is not always precisely the same, and that it has all kinds of exceptions. If we have ever so little experience, we are accustomed to seeing our expectations fail, and these deceptions return too often to appear extraordinary to us. A certain contingency is taught by experience just as well as a certain uniformity; then we have no reason for assigning the one to causes and forces entirely different from those upon which the other depends. In order to arrive at the idea of the supernatural, it is not enough, therefore, to be witnesses to unexpected events; it is also necessary that these be conceived as impossible, that is to say, irreconcilable with an order which, rightly or wrongly, appears to us to be implied in the nature of things. Now this idea of a necessary order has been constructed little by little by the positive sciences, and consequently the contrary notion could not have existed before them.
Also,