Once that would not have been possible. A book must be completed as it had been originally planned, finished, rounded, polished. As a man grows older his ideals change. Thoroughness is often an admirable ideal. But it is an ideal to be adopted with discrimination, having due reference to the nature of the work in hand. An artist, it seems to me now, has not always to finish his work in every detail; by not doing so he may succeed in making the spectator his co-worker, and put into his hands the tool to carry on the work which, as it lies before him, beneath its veil of yet partly unworked material, still stretches into infinity. Where there is most labour there is not always most life, and by doing less, provided only he has known how to do well, the artist may achieve more. He will not, I hope, achieve complete consistency. In fact a part of the method of such a book as this, written over a long period of years, is to reveal a continual slight inconsistency. That is not an evil, but rather the avoidance of an evil. We cannot remain consistent with the world save by growing inconsistent with our own past selves. The man who consistently—as he fondly supposes “logically”—clings to an unchanging opinion is suspended from a hook which has ceased to exist. “I thought it was she, and she thought it was me, and when we come near it weren’t neither one of us”—that metaphysical statement holds, with a touch of exaggeration, a truth we must always bear in mind concerning the relation of subject and object. They can neither of them possess consistency; they have both changed before they come up with one another. Not that such inconsistency is a random flux or a shallow opportunism. We change, and the world changes, in accordance with the underlying organisation, and inconsistency, so conditioned by truth to the whole, becomes the higher consistency of life. I am therefore able to recognise and accept the fact that, again and again in this book, I have come up against what, superficially regarded, seemed to be the same fact, and each time have brought back a slightly different report, for it had changed and I had changed. The world is various, of infinite iridescent aspect, and until I attain to a correspondingly infinite variety of statement I remain far from anything that could in any sense be described as “truth.” We only see a great opal that never looks the same this time as when we looked last time. “He never painted to-day quite the same as he had painted yesterday,” Elie Faure says of Renoir, and it seems to me natural and right that it should have been so. I have never seen the same world twice. That, indeed, is but to repeat the Heraclitean saying—an imperfect saying, for it is only the half of the larger, more modern synthesis I have already quoted—that no man bathes twice in the same stream. Yet—and this opposing fact is fully as significant—we really have to accept a continuous stream as constituted