Wittgenstein authored :
I. Tractatus Logico Philosophicus
II. Philosophical Investigations
III. On certainty
IV. Zettle
Select the correct answer by using the code :
UGC NET - 2012,
Answer: D
Wittgenstein wrote all four: Tractatus Logico-Philosophicus (1921), Philosophical Investigations (published 1953), On Certainty (notes from his last years, published 1969) and Zettel (a collection of notes published in 1967). The correct option is therefore the one that includes I, II, III and IV.
Options A, B and C each leave out at least one of these works, so they are incomplete. The Tractatus belongs to his early thought and the others to his later thought on language-games, certainty and mind.
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