Of what the work of return to immediacy consists, and how the intuition which it calls up reveals absolute fact, we shall see by an example, if we study more closely a capital point of Mr Bergson's philosophy, the theory of external perception.

If the act of perceiving realises the lived communion of the subject and object in the image, we must admit that here we have the perfect knowledge which we wish to obtain always: we resign ourselves to conception only for want of perception, and our ideal is to convert all conception into perception. Doubtless we might define philosophy by this same ideal, as an effort to expand our perceptive power until we render it capable of grasping all the wealth and all the depth of reality at a single glance. Too true it is that such an ideal remains inaccessible to us. Something, however, is given us already in aesthetic intuition. Mr Bergson has pointed it out in some admirable pages, ("Laughter", pages 153-161.) and has explained to us also how philosophy pursues an analogous end. (First lecture on "The Perception of Change", delivered at Oxford, 26th May 1911.)

But philosophy must be conceived as an art implying science and criticism, all experience and all reason. It is when we look at metaphysics in this way that they become a positive order of veritable knowledge. Kant has conclusively established that what lies beyond language can only be attained by direct vision, not by dialectic progress. His mistake was that he afterwards believed such a vision for ever impossible; and whence did this mistake arise, if not from the fact that, for his new vision, he exacted intuitive faculties quite different from those at man's disposal. Here again the artist will be our example and model. He appeals to no transcendent sense, but detaches common-sense from its utilitarian prejudices. Let us do the same: we shall obtain a similar result without lying ourselves open to Kant's objections. This work is everywhere possible, and it is, par excellence, the work of philosophy: let us try then to sketch it in relation to the perception of matter.

We must distinguish two senses of the word "perception." This word means first of all simple apprehension of immediacy, grasp of primitive fact. When we use it in this sense, we will agree to say pure perception. It is perhaps in place to see in it nothing but a limit which concrete experience never presents unmixed, a direction of research rather than the possession of a thing.

However that may be, the first sense is the fundamental sense, and what it designates must be at the root of all ordinary perception; I mean, of every mental operation which results in the construction of a percept: a term formed by analogy with concept, representing the result of a complex work of analysis and synthesis, with judgment from externals. We live the images in an act of pure perception, whilst the objects of ordinary perception are, for example, the bodies of which we speak in common language.

With regard to the relation of the two senses which we have just distinguished, common opinion seems very precise. It might be thus resumed: at the point of departure we have simple sensations, similar to qualitative atoms (this is the part of pure perception), and afterwards their arrangement into connected systems, which are percepts.

But criticism does not authorise this manner of looking at it. Nowhere does knowledge begin by separate elements. Such elements are always a product of analysis. So there is a problem to solve to regain the basis of pure perception which is hidden and obscured by our familiar percepts.

Do not suppose that the solution of this problem is easy. One method only is of any use: to plunge into reality, to become immersed in it, in a long-pursued effort to assimilate all the records of common-sense and positive science. "For we do not obtain an intuition of reality, that is to say, an intellectual sympathy with its inmost content, unless we have gained its confidence by long companionship with its superficial manifestations. And it is not a question merely of assimilating the leading facts; we must accumulate and melt them down into such an enormous mass that we are sure, in this fusion, of neutralising in one another all the preconceived and premature ideas which observers may have unconsciously allowed to form the sediment of their observations. Thus, and only thus, is crude materiality to be disengaged from known facts." ("Introduction to Metaphysics" in the "Metaphysical and Moral Review", January 1903. For the correct interpretation of this passage ("intellectual sympathy") it must not be forgotten that before "Creative Evolution", Mr Bergson employed the word "intelligence" in a wider acceptation, more akin to that commonly received.)

A directing principle controls this work and reintroduces order and convergence, after dispensing with them at the outset; viz. that, contrary to common opinion, perception as practised in the course of daily life, "natural" perception does not aim at a goal of disinterested knowledge, but one of practical utility, or rather, if it is knowledge, it is only knowledge elaborated in view of action and speech.

Need we repeat here the proofs by which we have already established in the most positive manner that such is really the meaning of ordinary perception, the underlying reason which causes it to take the place of pure perception? We perceive by habit only what is useful to us, what interests us practically; very often, too, we think we are perceiving when we are merely inferring, as for example when we seem to see a distance in depth, a succession of planes, of which in reality we judge by differences of colouring or relief.

Our senses supplement one another. A slow education has gradually taught us to co-ordinate their impressions, especially those of touch to those of vision. (H. Bergson, "Note on the Psychological Origins of Our Belief in the Law of Causality". Vol. i. of the "Library of the International Philosophical Congress", 1900.)

Theoretical forms come between nature and us: a veil of symbols envelops reality; thus, finally, we no longer see things themselves, we are content to read the labels on them.

Moreover, our perception appears to analysis completely saturated with memories, and that in view of our practical insertion in the present. I will not come back to this point which has been so lucidly explained by Mr Bergson in a lecture on "Dream" ("Report of the International Psychological Institute", May 1901.) and an article on "Intellectual Effort", ("Philosophical Review", January 1902.) the reading of which cannot be too strongly recommended as an introduction to the first chapter of "Matter and Memory", in which further arguments are to be found. I will only add one remark, following Mr Bergson, as always: perception is not simply contemplation, but consciousness of an original visual emotion combined with a complete group of actions in embryo, gestures in outline, and the graze of movement within, by which we prepare to grasp the object, describe its lines, test its functions, sound it, move it, and handle it in a thousand ways. (This is attested by the facts of apraxia or psychic blindness. Cf. "Matter and Memory", chapter ii.)

From the preceding observations springs the utilitarian and practical nature of common perception. Let us attempt now to see of what the elaboration which it makes reality undergo consists. This time I am summing up the fourth chapter of "Matter and Memory". First of all, we choose between the images, emphasising the strong, extinguishing the weak, although both have, a priori, the same interest for pure knowledge; we make this choice above all by according preference to impressions of touch, which are the most useful from the practical point of view. This selection determines the parcelling up of matter into independent bodies, and the artificial character of our proceeding is thus made plain. Does not science, indeed, conclude in the same way, showing us—as soon as she frees herself even to a small extent from common-sense—full continuity re-established by "moving strata," and all bodies resolved into stationary waves and knots of intersecting fluxes? Already, then, we shall be nearer pure perception if we cease to consider anything but the perceptible stuff in which numerically distinct percepts are cut. Even there, however, a utilitarian division continues. Our senses are instruments of abstraction, each of them discerning a possible path of action. We may say that corporal life functions in the manner of an absorbing milieu, which determines the disconnected scale of simple qualities by extinguishing most of the perceptible radiations. In short, the scale of sensations, with its numerical aspect, is nothing but the spectrum of our practical activity. Commonly we perceive only averages and wholes, which we contract into distinct "qualities". Let us disengage from this rhythm what is peculiar to ourselves.

Above all, let us strive to disengage ourselves from homogeneous space, this substratum of fixity, this arbitrary scheme of measurement and division, which, to our greater advantage, subtends the natural, qualitative, and undivided extension of images. (We usually represent homogeneous space as previous to the heterogeneous extension of images: as a kind of empty room which we furnish with percepts. We must reverse this order, and conceive, on the contrary, that extension precedes space.) And we shall finally have pure perception in so far as it is accessible to us.

There is no disputing the absolute value of this pure perception. The impotence of speculative reason, as demonstrated by Kant, is perhaps, at bottom, only the impotence of an intelligence in bondage to certain necessities of the corporal life, and exercised upon a matter which it has had to disorganise for the satisfaction of our needs. Our knowledge of things is then no longer relative to the fundamental structure of our mind, but only to its superficial and acquired habits, to the contingent form which it takes on from our corporal functions and our lower needs.

The relativity of knowledge is therefore not final. In unmaking what our needs have made we re-establish intuition in its original purity, and resume contact with reality. ("Matter and Memory", page 203.)

That is how things are really presented. Here we are confronted by the moving continuity of images. Pure perception is complete perception. From it we pass to ordinary perception by diminution, throwing shadows here and there: the reality perceived by common-sense is nothing else actually than universal interaction rendered visible by its very interruption at certain points.

Whence we have this double conclusion already formulated higher up: the relation of perception to matter is that of the part to the whole, and our consciousness is rather limited than relative. It must be stated that primarily we perceive things in themselves, not in us; the subjectivity of our current perception comes from our work of outlining it in the bosom of reality, but the root of pure perception plunges into full objectivity. If, at each point of matter, we were to succeed in possessing the stream of total interaction of which it marks a wave, and if we were to succeed in seeing the multiplicity of these points as a qualitative heterogeneous flux without number or severance, we should coincide with reality itself. It is true that such an ideal, while inaccessible on the one hand, would not succeed on the other without risk to knowledge; in fact, says Mr Bergson, ("Matter and Memory", page 38.) "to perceive all the influences of all the points of all bodies would be to descend to the state of material object."

But a solution of this double difficulty remains possible, a dynamic and approximate solution, which consists in looking for the absolute intuition of matter in such a mobilisation of our perspective faculties that we become capable of following, according to the circumstances, all the paths of virtual perception of which the common anxiety for the practical has made us choose one only, and capable of realising all the infinitely different modes of qualification and discernment.

But we have still to see how this "complete experience" can be practically thought.