Ludwig Wittgenstein, in full Ludwig Josef Johann Wittgenstein, (born April 26, 1889, Vienna, Austria-Hungary – died April 29, 1951, Cambridge, Cambridgeshire, England) was an Austrian-British philosopher, widely considered as one of the greatest philosophers of the 20th century.
Influenced by his teacher Bertrand Russell and by Gottlob Frege, Wittgenstein developed a passionate interest in the philosophy of logic and mathematics. In addition to logic and mathematics, he also worked in the philosophy of mind and language.
Wittgenstein is best known for his two major works, Tractatus Logico-Philosophicus (Logisch-Philosophische Abhandlung, 1921) and Philosophical Investigations (Philosophische Untersuchungen, published posthumously in 1953).
Today, Wittgenstein’s work continues to inspire and influence current philosophical thought, especially within the analytic philosophy.