Saul Kripke
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Saul Aaron Kripke was an American philosopher and logician. He was a distinguished professor of philosophy at the Graduate Center of the City University of New York and a professor emeritus at Princet
Kripke in 2005
Cover of Naming and Necessity
Saul Kripke gives a lecture about Gödel at the University of California, Santa Barbara.
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
The duck-rabbit illusion became famous when Wittgenstein used it to distinguish "seeing that" from "seeing as".