It is true that science develops and perfects it, refines and extends it, and even now and again corrects it. But science does not change either the direction or the essential steps.

In this philosophy, on the contrary, what is at first suspected and finally modified, is the setting of the points before the journey begins.

Not that, in saying so, we mean to condemn science; but we must recognise its just limits. The methods of science proper are in their place and appropriate, and lead to a knowledge which is true (though still symbolical), so long as the object studied is the world of practical action, or, to put it briefly, the world of inert matter.

But soul, life, and activity escape it, and yet these are the spring and ultimate basis of everything: and it is the appreciation of this fact, with what it entails, that is new. And yet, new as Mr Bergson's conception of philosophy may deservedly appear, it does not any the less, from another point of view, deserve to be styled classic and traditional.

What it really defines is not so much a particular philosophy as philosophy itself, in its original function.

Everywhere in history we find its secret current at its task.

All great philosophers have had glimpses of it, and employed it in moments of discovery. Only as a general rule they have not clearly recognised what they were doing, and so have soon turned aside.

But on this point I cannot insist without going into lengthy detail, and am obliged to refer the reader to the fourth chapter of "Creative Evolution", where he will find the whole question dealt with.

One remark, however, has still to be made. Philosophy, according to Mr Bergson's conception, implies and demands time; it does not aim at completion all at once, for the mental reform in question is of the kind which requires gradual fulfilment. The truth which it involves does not set out to be a non-temporal essence, which a sufficiently powerful genius would be able, under pressure, to perceive in its entirety at one view; and that again seems to be very new.

I do not, of course, wish to abuse systems of philosophy. Each of them is an experience of thought, a moment in the life of thought, a method of exploring reality, a reagent which reveals an aspect. Truth undergoes analysis into systems as does light into colours.