On Certainty by Ludwig Wittgenstein (HarperCollins) Written over the last 18 months of his life and inspired by his interest in G. E. Moore's defense of common sense, this much discussed volume collects Wittgenstein's reflections on knowledge and certainty, on what it is to know a proposition for sure.
Wittgenstein's On Certainty: There - Like Our Life by Push Rhees, edited by D. Z. Phillips ( Wiley-Blackwell)
Rush Rhees, a close friend of Wittgenstein and a major interpreter of his work, shows how Wittgenstein's On Certainty concerns logic, language, and reality – topics that occupied Wittgenstein since early in his career.Readings of Wittgenstein's On Certainty edited by Daniele Moyal-Sharrock , William Brenner (Palgrave Macmillan) is the first collection of papers devoted to Ludwig Wittgenstein's cryptic but brilliant On Certainty. This work, Wittgenstein's last, extends the thinking of his earlier, better known writings, and in so doing, makes the most important contribution to epistemology since Kant's Critique of Pure Reason--a claim the essays in this volume help to demonstrate. The essays have been grouped under four headings, reflecting current approaches to the work: the Framework, Transcendental, Epistemic, and Therapeutic readings.
Excerpt: 67o. We might speak of fundamental principles of human enquiry.
671. I fly from here to a part of the world where the people have only indefinite information, or none at all, about the possibility of flying. I tell them I have just flown there from. . . . They ask me if I might be mistaken.—They have obviously a false impression of how the thing happens. (If I were packed up in a box it would be possible for me to be mistaken about the way I had travelled.) If I simply tell them that I can't be mistaken, that won't perhaps convince them; but it will if I describe the actual procedure to them. Then they will certainly not bring the possibility of a mistake into the question. But for all that—even if they trust me—they might believe I had been dreaming or that magic had made me imagine it.
672. 'If I don't trust this evidence why should I trust any evidence ?'
673. Is it not difficult to distinguish between the cases in which I cannot and those in which I can hardly be mistaken? Is it always clear to which kind a case belongs ? I believe not.
674. There are, however, certain types of case in which I rightly say I cannot be making a mistake, and Moore has given a few examples of such cases.
I can enumerate various typical cases, but not give any common characteristic. (N. N. cannot be mistaken about his having flown from America to England a few days ago. Only if he is mad can he take anything else to be possible.)
675. If someone believes that he has flown from America to England in the last few days, then, I believe, he cannot be making a mistake.
And just the same if someone says that he is at this moment sitting at a table and writing.
676. "But even if in such cases I can't be mistaken, isn't it possible that I am drugged?" If I am and if the drug has taken away my consciousness, then I am not now really talking and thinking. I cannot seriously suppose that I am at this moment dreaming. Someone who, dreaming, says "I am dreaming", even if he speaks audibly in doing so, is no more right than if he said in his dream "it is raining", while it was in fact raining. Even if his dream were actually connected with the noise of the rain.
Even Wittgenstein's admirers have been puzzled by his last work, On Certainty. Some even regard it as a lapse at the end of a distinguished career, or as a late epistemological interest that remained undeveloped. Rush Rhees, a close friend of Wittgenstein and a major interpreter of his work, shows how Wittgenstein's On Certainty concerns logic, language and reality — topics that occupied Wittgenstein from early in his career.
From his earliest work on the nature of propositions, to his interest in On Certainty with the `sureness' in our language games, Wittgenstein questions 'what it means to say something:
He emphasizes the importance not of that which cannot be questioned, but of what we do not question in our thought and action. In this book, Rhees brings out the continuity in Wittgenstein's thought, and the radical character of his conclusions.
Wittgenstein's On Certainty: There - Like Our Life by Push Rhees, edited by D. Z. Phillips ( Wiley-Blackwell)
In explicating this text, and demonstrating its continuity with Wittgenstein's earlier work, Rhees has done a great service that will be of profound interest to students and scholars of Wittgenstein for generations to come. Rhees's comments are introduced by D. Z. Phillips, who writes a substantial and illuminating afterword that discusses current scholarship surrounding On Certainty, and its relationship to Rhees's work on this subject.
In the last months of his life, Wittgenstein was interested in certain propositions which had been discussed by G. E. Moore. Wittgenstein's notes make up the work now called On Certainty. The title is not an altogether happy one. 'Certainty' is no more prominent a theme than 'knowledge', `mistake' or 'what it is to say anything at all'.
The reference to Moore's propositions can give, and has given,
readers the impression that Wittgenstein's work is devoted to a
polemic against Moore's writings. This is a mistake. Wittgenstein
quotes several propositions which Moore had selected and spoken
about, returns to them repeatedly, as he does to other, additional,
propositions, because he thinks they play a curious role in our
speaking and thinking. An investigation of this role (and that is
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