 We can see now that the very thing that drew Marcuse to Heidegger’s philosophy was missing. Heidegger’s philosophy failed to provide Marcuse with a concrete philosophical foundation for Marxism as well as a theory of the radical act or radical subjectivity. Heidegger’s interest with Nazism made it easy for Marcuse to leave Heidegger in 1932. This move was also made easy by the publication of Marx’s 1844 Manuscripts first published in 1932. 