Bronze figure of Karl Marx

Karl Marx (German pronunciation: [ˈkaɐ̯l ˈmaɐ̯ks]; 5 May 1818 – 14 March 1883) was a German philosopher, economist, social scientist, sociologist, historian, journalist, and revolutionary socialist. Marx's work in economics laid the basis for much of the current understanding of labor and its relation to capital, and subsequent economic thought. He is one of the founders of sociology and social science. He published numerous books during his lifetime, the most notable being The Communist Manifesto (1848) and Das Kapital (1867–1894).