Editorial Collective Note: This is a new introduction to alienation that replaces our earlier introduction written in 2006. It’s part of our renovation and expansion of our “Fundamentals of Marxism” series and other articles on Marxist theory and the class struggle. Offering a brief introduction to Marx’s theory of alienation is not a straightforward task. This is due, in part, to conflicting interpretations of key aspects of Marx’s project directly related to alienation, the timing of the publication of Marx’s early manuscripts where the theory is articulated, and the political contexts in which it was taken up. Central to any theory of alienation are questions of the nature of existence, which are often posed this way: Is there a natural or timeless essence from which the human could be alienated? While this question has preoccupied many academics, our most important task is to consider the impact of debates around alienation on our practical, day-to-day organizing. In this article, we introduce Marx’s writing on alienation as they appear in the Economic and Philosophic Manuscripts of 1844, before discussing the historical context of their publication. We then chart the development of Marx’s thought from the manuscripts to his later work that is grounded in dialectical and historical materialism. Marx’s early works conceive “human nature” as an essential and ahistorical condition from which capital alienates workers, while, as we show, his later work focuses on capital’s process of abstraction and conceives of the human as a process of production, and therefore as dynamic and contingent on the mode of production. Read the full article: https://www.liberationschool.org/13-what-is-alienation-html/