Ludwig Heinrich Edler von Mises (German: [ˈluːtvɪç fɔn ˈmiːzəs]; 29 September 1881 – 10 October 1973) was an Austrian School economist, historian, logician, and sociologist. Mises wrote and lectured extensively on the societal contributions of classical liberalism. He is best known for his work on praxeology studies comparing communism and capitalism. He is considered one of the most influential economic and political thinkers of the 20th century.