René Descartes quote about doubt from Discourse on the Method - and as I observed that this truth, I think, therefore I am (COGITO ERGO SUM), was so certain and of such evidence that no ground of doubt, however extravagant, could be alleged by the sceptics capable of shaking it, I concluded that I might, without scruple, accept it as the first principle of the philosophy of which I was in search.
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and as I observed that this truth, I think, therefore I am (COGITO ERGO SUM), was so certain and of such evidence that no ground of doubt, however extravagant, could be alleged by the sceptics capable of shaking it, I concluded that I might, without scruple, accept it as the first principle of the philosophy of which I was in search.
 René Descartes, Discourse on the Method (1637). copy citation

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Author René Descartes
Source Discourse on the Method
Topic doubt truth philosophy
Date 1637
Language English
Reference
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Weblink http://www.gutenberg.org/files/59/59-h/59-h.htm

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