It is true that this logic is disconcerting for us. Yet we must be careful not to depreciate it: howsoever crude it may appear to us, it has been an aid of the greatest importance in the intellectual evolution of humanity. In fact, it is through it that the first explanation of the world has been made possible. Of course the mental habits it implies prevented men from seeing reality as their senses show it to them; but as they show it, it has the grave inconvenience of allowing of no explanation. For to explain is to attach things to each other and to establish relations between them which make them appear to us as functions of each other and as vibrating sympathetically according to an internal law founded in their nature. But sensations, which see nothing except from the outside, could never make them disclose these relations and internal bonds; the intellect alone can create the notion of them. When I learn that A regularly precedes B, my knowledge is increased by a new fact; but my intelligence is not at all satisfied with a statement which does not show its reason. I commence to _understand_ only if it is possible for me to conceive B in a way that makes it appear to me as something that is not foreign to A, and as united to A by some relation of kinship. The great service that religions have rendered to thought is that they have constructed a first representation of what these relations of kinship between things may be. In the circumstances under which it was attempted, the enterprise could obviously attain only precarious results. But then, does it ever attain any that are definite, and is it not always necessary to reconsider them? And also, it is less important to succeed than to try. The essential thing was not to leave the mind enslaved to visible appearances, but to teach it to dominate them and to connect what the senses separated; for from the moment when men have an idea that there are internal connections between things, science and philosophy become possible. Religion opened up the way for them. But if it has been able to play this part, it is only because it is a social affair. In order to make a law for the impressions of the senses and to substitute a new way of representing reality for them, thought of a new sort had to be founded: this is collective thought. If this alone has had this efficacy, it is because of the fact that to create a world of ideals through which the world of experienced realities would appear transfigured, a super-excitation of the intellectual forces was necessary, which is possible only in and through society.