Friedrich Engels

Engels was born into a wealthy textile manufacturer's family in Barmen (now part of Wuppertal), Prussia. His father sent him to England in 1842 to manage the family's cotton mill in Manchester, where he witnessed the harsh conditions of the working class firsthand. This experience led him to write The Condition of the Working Class in England (1845), a pioneering work of social investigation that combined empirical observation with radical critique. His time in Manchester also brought him into contact with the Chartist movement and the ideas of classical political economy, which he would later critique alongside Marx.

Engels met Marx in 1844 in Paris, beginning a lifelong intellectual partnership. Together they wrote The German Ideology (1845–46) and the Communist Manifesto (1848), commissioned by the Communist League. After the revolutions of 1848 failed, Engels returned to Manchester to work in his father's firm, financially supporting Marx for decades. He also contributed to Marx's Das Kapital, providing economic data and critiques. After Marx's death in 1883, Engels edited volumes II and III of Das Kapital from Marx's notes, a monumental editorial task that shaped the reception of Marx's economics.

Engels's later years were devoted to systematizing and popularizing Marxist theory. In Anti-Dühring (1878) he defended dialectical materialism against Eugen Dühring's ideas, and in Socialism: Utopian and Scientific (1880) he distilled this into a concise introduction. His Dialectics of Nature (posthumous) attempted to apply dialectical principles to the natural sciences, though it remained unfinished. He also wrote The Origin of the Family, Private Property and the State (1884), drawing on Lewis Henry Morgan's anthropology to argue that the family and state are historical constructs tied to class relations. These works influenced later Marxist thought, though some of his scientific extrapolations have been criticized.

Beyond his famous works, Engels had a keen interest in military affairs, writing under the pseudonym 'General' for the New American Cyclopaedia and contributing articles on military history and strategy. He was also a polyglot, fluent in several languages, and translated works into English and German. His personal life included a long relationship with Mary Burns, an Irish working-class woman, and after her death, with her sister Lizzie. Engels's financial support for Marx was crucial, but he also managed his own business affairs, which he disliked but saw as necessary. His will left his estate to Marx's surviving daughter, Laura, and to the German Social Democratic Party, which used the funds to publish Marx's works.

Dialectical materialism

The philosophical framework combining Hegelian dialectics with materialist philosophy, central to Marxist theory.

Communist League

An international political organization that commissioned the Communist Manifesto.

Chartism

A British working-class movement for political reform in the 1830s–1840s.