Ludwig Wittgenstein

Ludwig Wittgenstein (1889–1951) was an Austrian philosopher. After studying engineering and conducting research in aeronautics, he turned to philosophy. His first major work, the Tractatus Logico-Philosophicus, was published in 1922. He later worked for a time as a primary-school teacher and gardener before teaching at Trinity College, Cambridge. His second major work, Philosophical Investigations, was published posthumously in 1953.