On this day, 136 years ago, on April 26, 1889 (March 27, 1889 in the lunar calendar), Wittgenstein, an Austrian philosopher, logician, and representative figure of analytical philosophy, was born. Ludwig Wittgenstein Ludwig Wittgenstein was born on April 26, 1889 in Vienna, the Austro-Hungarian Empire. His father, Karl Wittgenstein, was a European steel industry giant, and his mother, Leopardine, was a banker's daughter. Ludwig, who was three-quarters Jewish, became British after the Nazis annexed Austria. In 1903, he studied at a secondary school in Linz known for its technology and studied with Adolf Hitler. In 1908, he entered the University of Victoria in Manchester, England to study for a degree in aeronautical engineering aerodynamics. In the summer of 1911, he visited the logician Frege. After his recommendation, he went to Trinity College, Cambridge University, England to study under the British philosopher Russell, and later became Russell's student and friend. After the beginning of World War I, he joined the army and completed the "Tractatus of Logical Philosophy", which marked the so-called linguistic turn of philosophy, on the battlefield. In the spring of 1928, after listening to a lecture by the mathematician Browell in Vienna on "Mathematics, Science and Language", Wittgenstein regained his strong interest in philosophical exploration. In 1929, Wittgenstein returned to Cambridge. After passing a doctoral defense on "The Tractatus of Logical Philosophy" as a thesis, which was reviewed by Russell and G.E. Moore, he stayed at Trinity College to teach philosophy, and in 1939 succeeded Moore as a professor of philosophy. In 1947, Wittgenstein, who firmly believed that "professor of philosophy" was "an absurd job", resigned from Cambridge to concentrate on thinking and writing. On April 29, 1951, Wittgenstein died of prostate cancer at the home of his friend Dr. Bivan. After his death, his disciples Anscone and Reese published "Philosophical Studies"(English version, German version), which is believed to have guided the new direction of language philosophy