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Project Gutenberg's The Problems of Philosophy, by Bertrand Russell
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This eBook is for the use of anyone anywhere at no cost and with
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almost no restrictions whatsoever. You may copy it, give it away or
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re-use it under the terms of the Project Gutenberg License included
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with this eBook or online at www.gutenberg.org
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Title: The Problems of Philosophy
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Author: Bertrand Russell
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Release Date: June, 2004 [EBook #5827]
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Posting Date: May 2, 2009
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Language: English
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Character set encoding: ASCII
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*** START OF THIS PROJECT GUTENBERG EBOOK THE PROBLEMS OF PHILOSOPHY ***
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Produced by Gordon Keener
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THE PROBLEMS OF PHILOSOPHY
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By Bertrand Russell
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PREFACE
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In the following pages I have confined myself in the main to those
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problems of philosophy in regard to which I thought it possible to say
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something positive and constructive, since merely negative criticism
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seemed out of place. For this reason, theory of knowledge occupies a
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larger space than metaphysics in the present volume, and some topics
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much discussed by philosophers are treated very briefly, if at all.
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I have derived valuable assistance from unpublished writings of G. E.
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Moore and J. M. Keynes: from the former, as regards the relations
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of sense-data to physical objects, and from the latter as regards
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probability and induction. I have also profited greatly by the
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criticisms and suggestions of Professor Gilbert Murray.
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1912
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CHAPTER I. APPEARANCE AND REALITY
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Is there any knowledge in the world which is so certain that no
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reasonable man could doubt it? This question, which at first sight might
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not seem difficult, is really one of the most difficult that can
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be asked. When we have realized the obstacles in the way of a
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straightforward and confident answer, we shall be well launched on the
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study of philosophy--for philosophy is merely the attempt to answer
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such ultimate questions, not carelessly and dogmatically, as we do in
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ordinary life and even in the sciences, but critically, after exploring
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all that makes such questions puzzling, and after realizing all the
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vagueness and confusion that underlie our ordinary ideas.
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In daily life, we assume as certain many things which, on a closer
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scrutiny, are found to be so full of apparent contradictions that only a
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great amount of thought enables us to know what it is that we really may
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believe. In the search for certainty, it is natural to begin with our
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present experiences, and in some sense, no doubt, knowledge is to be
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derived from them. But any statement as to what it is that our immediate
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experiences make us know is very likely to be wrong. It seems to me that
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I am now sitting in a chair, at a table of a certain shape, on which I
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see sheets of paper with writing or print. By turning my head I see out
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of the window buildings and clouds and the sun. I believe that the sun
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is about ninety-three million miles from the earth; that it is a hot
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globe many times bigger than the earth; that, owing to the earth's
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rotation, it rises every morning, and will continue to do so for an
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indefinite time in the future. I believe that, if any other normal
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person comes into my room, he will see the same chairs and tables and
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books and papers as I see, and that the table which I see is the same as
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the table which I feel pressing against my arm. All this seems to be
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so evident as to be hardly worth stating, except in answer to a man who
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doubts whether I know anything. Yet all this may be reasonably doubted,
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and all of it requires much careful discussion before we can be sure
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that we have stated it in a form that is wholly true.
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To make our difficulties plain, let us concentrate attention on the
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table. To the eye it is oblong, brown and shiny, to the touch it is
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smooth and cool and hard; when I tap it, it gives out a wooden sound.
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Any one else who sees and feels and hears the table will agree with this
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