(26 April 1889
– 29 April 1951)
was an Austrian-British philosopher
primarily in logic,
the philosophy of mathematics, the
philosophy of mind,
and the philosophy of language.
From 1929 to
1947, Wittgenstein taught at the University of Cambridge.
his lifetime he published just one slim book, the 75-page
Tractatus Logico-Philosophicus (1921),
one article, one book
review and a children's dictionary.
His voluminous manuscripts
were edited and published posthumously.
appeared as a book in 1953,
and has since come to
as one of the most important works
of philosophy in the twentieth century.