On Certainty (German: Über Gewissheit, original spelling Über Gewißheit) is a philosophical book composed from notes written by Ludwig Wittgenstein over four separate periods in the eighteen months before his death on 29th April 1951. He left his initial notes at the home of Elizabeth Anscombe, who linked them by theme with later passages in Wittgenstein's personal notebooks and (with G. H. von Wright), compiled them into a German/English parallel text book published in 1969. The translators were Denis Paul and Anscombe herself. (The editors also numbered and grouped the 676 passages; citations to the work are standardly given as OC1..OC676 rather than by page number.)
|Translator||Denis Paul and G. E. M. Anscombe|
|Language||German and English|
|Subject||Ordinary Language Philosophy, Skepticism and Certainty|
The book's concerns are largely epistemological, a recurrent theme being that there are some things which must be exempt from doubt in order for human practices to be possible, including the activity of raising doubts: "A doubt that doubted everything would not be a doubt" (OC450). The book takes as its starting point the 'here is one hand' argument made by G. E. Moore and examines the role of knowledge claims in human language, particularly of "certain ('gewisser') empirical propositions", what are now called Moorean propositions or Moorean certainties.
An important outcome is Wittgenstein's claim that all doubt is embedded in underlying beliefs and therefore the most radical forms of doubt must be rejected since they form a contradiction within the system that expressed them. Wittgenstein also sketched novel refutations of philosophical skepticism in various guises.
The genesis of On Certainty was Wittgenstein's "long interest" in two famous papers by G. E. Moore, his 1939 Proof of the External World and earlier Defence of Common Sense (1925). Wittgenstein thought the second of these was Moore's "best article", but despite that he did not think Moore's 'proof' of external reality decisive. Apparently at the instigation of his close friend Norman Malcolm in mid-1949, Wittgenstein began to draft his response on loose sheets, probably while staying in Vienna in late 1949 and early 1950. He returned to the subject twice more before a fourth and final, highly energetic six week period immediately before his death, when more than half of On Certainty was written. By this time Wittgenstein was using notebooks, recording dates, and marking the topic off separately. Wittgenstein described this final, fertile period in his last letter to Norman Malcolm dated 16th April 1951, thirteen days before his death from the cancer diagnosed in autumn 1949:
- "An extraordinary thing has happened to me. About a month ago I suddenly found myself in the right frame of mind for doing philosophy. I had been absolutely certain that I'd never again be able to do it. It's the first time after more than 2 years that the curtain in my brain has gone up. -Of course, so far I've only worked for about 5 weeks & it may be all over by tomorrow, but it bucks me up a lot now."
Nevertheless, on the same day he recorded (after OC532): "I do philosophy now like an old woman who is always mislaying something and having to look for it again: now her spectacles, now her keys." A week and a half earlier he had written a similar note before OC471: "Here there is still a big gap in my thinking. And I doubt whether it will be filled now."
The text as publishedEdit
The four parts of On Certainty are of fairly unequal length and only the last is systematically dated:
- OC1..OC65 - probably all before end of March 1950
- OC66..OC192 - of entirely unknown date
- OC193..OC299 - uncertain, but OC287 is dated 23.9.50 and might apply onward
- OC300..OC676 - dates begin at 10.3.51 and run to 27.4.51 (OC670)
- On Certainty - translation by Denis Paul and G. E. M. Anscombe
- Jesús Padilla Gálvez, Margit Gaffal (Eds.): Doubtful Certainties. Language-Games, Forms of Life, Relativism. (2nd edition) De Gruyter, Berlin, 2013, 978-3-11-032192-0.
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