the Whole a mere element in its being. And such a doctrine not only is not natural science, but, even if we suppose it otherwise to have any value, for that science, at least, it is worthless. For assume that force matter and motion are more than mere working ideas, inconsistent but useful—will they, on that assumption, work better? If you, after all, are going to use them solely for the interpretation of spatial events, then, if they are absolute truth, that is nothing to you. This absolute truth you must in any case apply as a mere system of the conditions of the occurrence of phenomena; and for that purpose anything, which you apply, is the same, if it does the same work. But I think the failure of natural science (so far as it does fail) to maintain its own position, is not hard to understand. It seems produced by more than one cause. There is first a vague notion that absolute truth must be pursued by every kind of special science. There is inability to perceive that, in such a science, something less is all that we can use, and therefore all that we should want. But this unfortunately is not all. For metaphysics itself, by its interference with physical science, has induced that to act, as it thinks, in self-defence, and has led it, in so doing, to become metaphysical. And this interference of metaphysics I would admit and deplore, as the result and the parent of most injurious misunderstanding. Not only have there been efforts at construction which have led to no positive result, but there have been attacks on the sciences which have pushed into abuse a legitimate function. For, as against natural science, the duty of metaphysics is limited. So long as that science keeps merely to the sphere of phenomena and the laws of their occurrence, metaphysics has no right to a single word of criticism. Criticism begins when what is relative—mere ways of appearance—is, unconsciously or consciously, offered as more. And I do not doubt that there are doctrines,
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