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Since the time of Karl Marx and Friedrich Engels,[1] a variety of developments have been made in communist theory and attempts to build a communist society,[2] leading to a variety of different communist ideologies.[3] These span philosophical, social, political and economic ideologies and movements,[4] and can be split into three broad categories: Marxist-based ideologies, Leninist-based ideologies, and Non-Marxist ideologies, though influence between the different ideologies is found throughout and key theorists may be described as belonging to one or important to multiple ideologies.
- ^ Krupavičius 2011, p. 314.
- ^ Lazar 2011, p. 310.
- ^ Wolff, Richard; Resnick, Stephen (August 1987). Economics: Marxian versus Neoclassical. The Johns Hopkins University Press. p. 130. ISBN 978-0-8018-3480-6.
The German Marxists extended the theory to groups and issues Marx had barely touched. Marxian analyses of the legal system, of the social role of women, of foreign trade, of international rivalries among capitalist nations, and the role of parliamentary democracy in the transition to socialism drew animated debates. [...] Marxian theory (singular) gave way to Marxian theories (plural).
- ^ Lazar 2011.