Ludwig Wittgenstein was one of the most influential philosopher of 20th century. He was born in reputable Viennese family, but, because of devotion to philosophy, refused all family’s fortune. His philosophical development can be dividet in two periods: early which was completed by publication of Tractatus logico-philosopicus (1921) and late which was crowned by posthumously published Philosophical Investigations (1953). Basic interest of Wittgenstein philosophy was language, which he investigated in logical shapes and ordinary use. As all great people Wittgenstein was not only a philosopher but also constructor, tutor, soldier, gardner in monestary and much more. He died because of prostate cancer.  

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