The German Ideology (German: Die Deutsche Ideologie) is a set of manuscripts written by Karl Marx and Friedrich Engels around April or early May 1846. Marx and Engels did not find a publisher. However, the work was later retrieved and published for the first time in 1932 by David Riazanov through the Marx-Engels Institute in Moscow.
The multi-part book consists of many satirically written polemics against Bruno Bauer, other Young Hegelians, and Max Stirner's The Ego and Its Own (1844). Part I, however, is a work of exposition giving the appearance of being the work for which the "Theses on Feuerbach" served as an outline. The work is a restatement of the theory of history Marx was beginning to call the "materialist conception of history".
Since its first publication, Marxist scholars have found the work particularly valuable since it is perhaps the most comprehensive statement of Marx's theory of history stated at such length and detail.