 Wittgenstein was born on April 26, 1889 in Vienna, Austria, to a wealthy industrial family, well-situated in intellectual and cultural Viennese circles. In 1908 he began his studies in aeronautical engineering at Manchester University where his interest in the philosophy of pure mathematics led him to Frege. Upon Frege’s advice, in 1911 he went to Cambridge to study with Bertrand Russell. Russell wrote, upon meeting Wittgenstein: “An unknown German appeared … obstinate and perverse, but I think not stupid” (quoted by Monk 1990: 38f). Within one year, Russell was committed: “I shall certainly encourage him. Perhaps he will do great things … I love him and feel he will solve the problems I am too old to solve” (quoted by Monk 1990: 41). Russell’s insight was accurate. Wittgenstein was idiosyncratic in his habits and way of life, yet profoundly acute in his philosophical sensitivity.