The important point to notice here is the intellectualist logic. Both sides treat it as authoritative, but they do so capriciously: the absolutists smashing the world of sense by its means, the empiricists smashing the absolute—for the absolute, they say, is the quintessence of all logical contradictions. Neither side attains consistency. The Hegelians have to invoke a higher logic to supersede the purely destructive efforts of their first logic. The empiricists use their logic against the absolute, but refuse to use it against finite experience. Each party uses it or drops it to suit the vision it has faith in, but neither impugns in principle its general theoretic authority.

Bergson alone challenges its theoretic authority in principle. He alone denies that mere conceptual logic can tell us what is impossible or possible in the world of being or fact; and he does so for reasons which at the same time that they rule logic out from lordship over the whole of life, establish a vast and definite sphere of influence where its sovereignty is indisputable. Bergson's own text, felicitous as it is, is too intricate for quotation, so I must use my own inferior words in explaining what I mean by saying this.

In the first place, logic, giving primarily the relations between concepts as such, and the relations between natural facts only secondarily or so far as the facts have been already identified with concepts and defined by them, must of course stand or fall with the conceptual method. But the conceptual method is a transformation which the flux of life undergoes at our hands in the interests of practice essentially and only subordinately in the interests of theory. We live forward, we understand backward, said a danish writer; and to understand life by concepts is to arrest its movement, cutting it up into bits as if with scissors, and immobilizing these in our logical herbarium where, comparing them as dried specimens, we can ascertain which of them statically includes or excludes which other. This treatment supposes life to have already accomplished itself, for the concepts, being so many views taken after the fact, are retrospective and post mortem. Nevertheless we can draw conclusions from them and project them into the future. We cannot learn from them how life made itself go, or how it will make itself go; but, on the supposition that its ways of making itself go are unchanging, we can calculate what positions of imagined arrest it will exhibit hereafter under given conditions. We can compute, for instance, at what point Achilles will be, and where the tortoise will be, at the end of the twentieth minute. Achilles may then be at a point far ahead; but the full detail of how he will have managed practically to get there our logic never gives us—we have seen, indeed, that it finds that its results contradict the facts of nature. The computations which the other sciences make differ in no respect from those of mathematics. The concepts used are all of them dots through which, by interpolation or extrapolation, curves are drawn, while along the curves other dots are found as consequences. The latest refinements of logic dispense with the curves altogether, and deal solely with the dots and their correspondences each to each in various series. The authors of these recent improvements tell us expressly that their aim is to abolish the last vestiges of intuition, videlicet of concrete reality, from the field of reasoning, which then will operate literally on mental dots or bare abstract units of discourse, and on the ways in which they may be strung in naked series.

This is all very esoteric, and my own understanding of it is most likely misunderstanding. So I speak here only by way of brief reminder to those who know. For the rest of us it is enough to recognize this fact, that altho by means of concepts cut out from the sensible flux of the past, we can re-descend upon the future flux and, making another cut, say what particular thing is likely to be found there; and that altho in this sense concepts give us knowledge, and may be said to have some theoretic value (especially when the particular thing foretold is one in which we take no present practical interest); yet in the deeper sense of giving insight they have no theoretic value, for they quite fail to connect us with the inner life of the flux, or with the causes that govern its direction. Instead of being interpreters of reality, concepts negate the inwardness of reality altogether. They make the whole notion of a causal influence between finite things incomprehensible. No real activities and indeed no real connexions of any kind can obtain if we follow the conceptual logic; for to be distinguishable, according to what I call intellectualism, is to be incapable of connexion. The work begun by Zeno, and continued by Hume, Kant, Herbart, Hegel, and Bradley, does not stop till sensible reality lies entirely disintegrated at the feet of 'reason.'

Of the 'absolute' reality which reason proposes to substitute for sensible reality I shall have more to say presently. Meanwhile you see what Professor Bergson means by insisting that the function of the intellect is practical rather than theoretical. Sensible reality is too concrete to be entirely manageable—look at the narrow range of it which is all that any animal, living in it exclusively as he does, is able to compass. To get from one point in it to another we have to plough or wade through the whole intolerable interval. No detail is spared us; it is as bad as the barbed-wire complications at Port Arthur, and we grow old and die in the process. But with our faculty of abstracting and fixing concepts we are there in a second, almost as if we controlled a fourth dimension, skipping the intermediaries as by a divine winged power, and getting at the exact point we require without entanglement with any context. What we do in fact is to harness up reality in our conceptual systems in order to drive it the better. This process is practical because all the termini to which we drive are particular termini, even when they are facts of the mental order. But the sciences in which the conceptual method chiefly celebrates its triumphs are those of space and matter, where the transformations of external things are dealt with. To deal with moral facts conceptually, we have first to transform them, substitute brain-diagrams or physical metaphors, treat ideas as atoms, interests as mechanical forces, our conscious 'selves' as 'streams,' and the like. Paradoxical effect! as Bergson well remarks, if our intellectual life were not practical but destined to reveal the inner natures. One would then suppose that it would find itself most at home in the domain of its own intellectual realities. But it is precisely there that it finds itself at the end of its tether. We know the inner movements of our spirit only perceptually. We feel them live in us, but can give no distinct account of their elements, nor definitely predict their future; while things that lie along the world of space, things of the sort that we literally handle, are what our intellects cope with most successfully. Does not this confirm us in the view that the original and still surviving function of our intellectual life is to guide us in the practical adaptation of our expectancies and activities?

One can easily get into a verbal mess at this point, and my own experience with pragmatism' makes me shrink from the dangers that lie in the word 'practical,' and far rather than stand out against you for that word, I am quite willing to part company with Professor Bergson, and to ascribe a primarily theoretical function to our intellect, provided you on your part then agree to discriminate 'theoretic' or scientific knowledge from the deeper 'speculative' knowledge aspired to by most philosophers, and concede that theoretic knowledge, which is knowledge about things, as distinguished from living or sympathetic acquaintance with them, touches only the outer surface of reality. The surface which theoretic knowledge taken in this sense covers may indeed be enormous in extent; it may dot the whole diameter of space and time with its conceptual creations; but it does not penetrate a millimeter into the solid dimension. That inner dimension of reality is occupied by the activities that keep it going, but the intellect, speaking through Hume, Kant & Co., finds itself obliged to deny, and persists in denying, that activities have any intelligible existence. What exists for thought, we are told, is at most the results that we illusorily ascribe to such activities, strung along the surfaces of space and time by regeln der verknüpfung, laws of nature which state only coexistences and successions.[1]

Thought deals thus solely with surfaces. It can name the thickness of reality, but it cannot fathom it, and its insufficiency here is essential and permanent, not temporary.

The only way in which to apprehend reality's thickness is either to experience it directly by being a part of reality one's self, or to evoke it in imagination by sympathetically divining some one else's inner life. But what we thus immediately experience or concretely divine is very limited in duration, whereas abstractly we are able to conceive eternities. Could we feel a million years concretely as we now feel a passing minute, we should have very little employment for our conceptual faculty. We should know the whole period fully at every moment of its passage, whereas we must now construct it laboriously by means of concepts which we project. Direct acquaintance and conceptual knowledge are thus complementary of each other; each remedies the other's defects. If what we care most about be the synoptic treatment of phenomena, the vision of the far and the gathering of the scattered like, we must follow the conceptual method. But if, as metaphysicians, we are more curious about the inner nature of reality or about what really makes it go, we must turn our backs upon our winged concepts altogether, and bury ourselves in the thickness of those passing moments over the surface of which they fly, and on particular points of which they occasionally rest and perch.

Professor Bergson thus inverts the traditional platonic doctrine absolutely. Instead of intellectual knowledge being the profounder, he calls it the more superficial. Instead of being the only adequate knowledge, it is grossly inadequate, and its only superiority is the practical one of enabling us to make short cuts through experience and thereby to save time. The one thing it cannot do is to reveal the nature of things—which last remark, if not clear already, will become clearer as I proceed. Dive back into the flux itself, then, Bergson tells us, if you wish to know reality, that flux which Platonism, in its strange belief that only the immutable is excellent, has always spurned; turn your face toward sensation, that flesh-bound thing which rationalism has always loaded with abuse.—This, you see, is exactly the opposite remedy from that of looking forward into the absolute, which our idealistic contemporaries prescribe. It violates our mental habits, being a kind of passive and receptive listening quite contrary to that effort to react noisily and verbally on everything, which is our usual intellectual pose.

What, then, are the peculiar features in the perceptual flux which the conceptual translation so fatally leaves out?