Paul Strathern - Wittgenstein in 90 minutes

wiki: Ludwig Josef Johann Wittgenstein (pronounced [ˈluːtvɪk ˈjoːzɛf ˈjoːhan ˈvɪtgənʃtaɪn]) (26 April 1889 – 29 April 1951) was an Austrian-British philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language.[1]
Described by Bertrand Russell as "the most perfect example I have ever known of genius as traditionally conceived, passionate, profound, intense, and dominating",[2] Wittgenstein is considered by many to be the greatest philosopher of the 20th century.[3] He helped inspire two of the century's principal philosophical movements: the Vienna Circle and Oxford ordinary language philosophy. According to an end of the century poll, professional philosophers in Canada and the U.S. rank both his Tractatus Logico-Philosophicus (TLP) and Philosophical Investigations among the top five most important books in twentieth-century philosophy, the latter standing out as "...the one crossover masterpiece in twentieth-century philosophy, appealing across diverse specializations and philosophical orientations".[4] Wittgenstein's influence has been felt in nearly every field of the humanities and social sciences, yet there are widely diverging interpretations of his thought.