Wednesday

Notes on Certainty


Notes for On Certainty, written April 26, 1951–3 days before his death:

660. I might ask: “How could I be making a mistake about my name being L.W.?” And I can say: I can’t see how it would be possible.

661. How might I be mistaken in my assumption that I was never on the moon?

662. If I were to say, “I have never been on the moon–but I may be mistaken,” that would be idiotic.

For even the thought that I might have transported there, by unknown means, in my sleep, would not give me any right to speak of a possible mistake here. I play the game wrong if I do.

663. I have a right to say, “I can’t be making a mistake about this,” even if I am in error.

Wittgenstein

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