Ludwig Josef Johann Wittgenstein was born in Vienna in 1889 to a wealthy industrialist family and pursued an education in mechanical engineering before going on to study, and later to teach at the University of Cambridge, where he lived until his death in 1951. He is regarded by many as the greatest philosopher of the twentieth century, and his two major works, the Tractatus Logico-Philosophicus (1921) and Philosophical Investigations (published posthumously in 1953), are two of the most influential works within the history of the analytic tradition.