“467. I am sitting with a philosopher in the garden; he says again and again "I know that that's a tree", pointing to a tree that is near us. Someone else arrives and hears this, and I tell them: "This fellow isn't insane. We are only doing philosophy."”
Source: On Certainty (1969)
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Ludwig Wittgenstein 228
Austrian-British philosopher 1889–1951Related quotes

When asked about listening to yourself.
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1963

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