Karl Marx (5 May 1818 – 14 March 1883) was a German philosopher, economist, historian, political theorist, sociologist, journalist and revolutionary socialist. Marx has been described as one of the most influential figures in human history, and his work has been both lauded and criticised. His work in economics laid the basis for much of the current understanding of labour and its relation to capital, and subsequent economic thought. Many intellectuals, labour unions, artists and political parties worldwide have been influenced by Marx's work, with many modifying or adapting his ideas. Marx is typically cited as one of the principal architects of modern social science. Bust is made of bronze copper, height 21 cm (8.5 inches).