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"Philosophy is not a theory," asserted Austro-British philosopher Ludwig Wittgenstein (1889–1951), "but an activity.". After examining the logical structure of propositions and the nature of logical inference, he discusses the theory of knowledge as well as principles of physics and ethics and aspects of the mystical.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.