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Ludwig Wittgenstein

Philosophy is a battle against the bewitchment of our intelligence by means of language.

What can be said at all can be said clearly; and whereof one cannot speak thereof one must be silent.

Logic must look after itself. In a certain sense, we cannot make mistakes in logic.

Portrait of Ludwig Wittgenstein

Ludwig Wittgenstein (1889 – 1951) was an Austrian philosopher known for having inspired two of the century's principal philosophical movements, logical positivism and ordinary language philosophy. Described by Bertrand Russell as 'the most perfect example I have known of genius as traditionally conceived, passionate, profound, intense, and dominating'.

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Listen to Barry Smith on Wittgenstein's conception of philosophy

Uttering a word is like striking a note on the keyboard of the imagination.

Like everything metaphysical the harmony between thought and reality is to be found in the grammar of the language.

In every culture, I come across a chapter headed 'Wisdom.' And then I know exactly what is going to follow: Vanity of vanities, all is vanity.