If we wish thoroughly to grasp the reality of things, we must think otherwise. Neither of these ready-made concepts, mechanism and finality, is in place, because both of them imply the same postulate, viz. that "everything is given," either at the beginning or at the end, whilst evolution is nothing if it is not, on the contrary, "that which gives." Let us take care not to confound evolution and development. There is the stumbling-block of the usual transformist theories, and Mr Bergson devotes to it a closely argued and singularly penetrating criticism, by an example which he analyses in detail. ("Creative Evolution", chapter i.) These theories either do not explain the birth of variation, and limit themselves to an attempt to make us understand how, once born, it becomes fixed, or else through need of adaptation they look for a conception of its birth. But in both cases they fail.

"The truth is that adaptation explains the windings of the movement of evolution, but not the general directions of the movement, still less the movement itself. The road which leads to the town is certainly obliged to climb the hills and go down the slopes; it adapts itself to the accidents of the ground; but the accidents of the ground are not the cause of the road, any more than they have imparted its direction." ("Creative Evolution", pages 111-112.)

At the bottom of all these errors there are only prejudices of practical action. That is of course why every work appears to be an outside construction beginning with previous elements; a phase of anticipation followed by a phase of execution, calculation, and art, an effective projecting cause, and a concerted goal, a mechanism which hurls to a finality which aims. But the genuine explanation must be sought elsewhere. And Mr Bergson makes this plain by two admirable analyses in which he takes to pieces the common ideas of disorder and nothingness in order to explain their meaning relative to our proceedings in industry or language.

Let us come back to facts, to immediate experience, and try to translate its pure data simply. What are the characteristics of vital evolution? First of all it is a dynamic continuity, a continuity of qualitative progress; next, it is essentially a duration, an irreversible rhythm, a work of inner maturation. By the memory inherent in it, the whole of its past lives on and accumulates, the whole of its past remains for ever present to it; which is tantamount to saying that it is experience.

It is also an effort of perpetual invention, a generation of continual novelty, indeducible and capable of defying all anticipation, as it defies all repetition. We see it at its task of research in the groping attempts exhibited by the long-sought genesis of species; we see it triumphant in the originality of the least state of consciousness, of the least body, of the tiniest cell, of which the infinity of times and spaces does not offer two identical specimens.

But the reef which lies in its way, and on which too often it founders, is habit; habit would be a better and more powerful means of action if it remained free, but in so far as it congeals and becomes materialised, is a hindrance and an obstacle. First of all we have the average types round which fluctuates an action which is decreasing and becoming reduced in breadth. Then we have the residual organs, the proofs of dead life, the encrustations from which the stream of consciousness gradually ebbs; and finally we have the inert gear from which all real life has disappeared, the masses of shipwrecked "things" rearing their spectral outlines where once rolled the open sea of mind. The concept of mechanism suits the phenomena which occur within the zone of wreckage, on this shore of fixities and corpses. But life itself is rather finality, if not in the anthropomorphic sense of premeditated design, plan, or programme, at least in this sense, that it is a continually renewed effort of growth and liberation. And it is from here we get Mr Bergson's formulae: vital impetus and creative evolution.

In this conception of being consciousness is everywhere, as original and fundamental reality, always present in a myriad degrees of tension or sleep, and under infinitely various rhythms.

The vital impulse consists in a "demand for creation"; life in its humblest stage already constitutes a spiritual activity; and its effort sends out a current of ascending realisation which again determines the counter-current of matter. Thus all reality is contained in a double movement of ascent and descent. The first only, which translates an inner work of creative maturation, is essentially durable; the second might, in strictness, be almost instantaneous, like that of an escaping spring; but the one imposes its rhythm on the other. From this point of view mind and matter appear not as two things opposed to each other, as static terms in fixed antithesis, but rather as two inverse directions of movement; and, in certain respects, we must therefore speak not so much of matter or mind as of spiritualisation and materialisation, the latter resulting automatically from a simple interruption of the former. "Consciousness or superconsciousness is the rocket, the extinguished remains of which fall into matter." ("Creative Evolution", page 283.)

What image of universal evolution is then suggested? Not a cascade of deduction, nor a system of stationary pulsations, but a fountain which spreads like a sheaf of corn and is partially arrested, or at least hindered and delayed, by the falling spray. The fountain itself, the reality which is created, is vital activity, of which spiritual activity represents the highest form; and the spray which falls is the creative act which falls, it is reality which is undone, it is matter and inertia. In a word, the supreme law of genesis and fall, the double play of which constitutes the universe, comprises a psychological formula.

Everything begins in the manner of an invention, as the fruit of duration and creative genius, by liberty, by pure mind; then comes habit, a kind of body, as the body is already a group of habits; and habit, taking root, being a work of consciousness which escapes it and turns against it, is little by little degraded into mechanism in which the soul is buried.