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History
Philosophical Investigations
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Philosophical Investigations is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953.
Cover of the first English edition
Cover of the first English edition
The duck-rabbit, made famous by Wittgenstein
The duck-rabbit, made famous by Wittgenstein
Ludwig Wittgenstein
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Ludwig Josef Johann Wittgenstein was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language.
Wittgenstein in 1929
Wittgenstein in 1929
Karl Wittgenstein was one of the richest men in Europe.
Karl Wittgenstein was one of the richest men in Europe.
Palais Wittgenstein, the family home, around 1910
Palais Wittgenstein, the family home, around 1910
Ludwig, c. 1890s
Ludwig, c. 1890s