 Marcuse will spend the rest of his life carrying out the investigations started in these early works. What distinguishes his project from Marx’s is the way in which each will deal with the problem of concealment mentioned in the above quote. Marx will develop two different but related approaches. His critique of political economy is an attempt to disclose the inner logic of capitalism (how it works) as well as the contradictions that will lead to the collapse of capitalism. The second approach is to work out a theory of revolution which presupposes the awakening of self-consciousness in the working class. In both approaches concealment will give way to disclosure and social transformation. We saw earlier that Marx’s predictions did not come true on either account. This failure in part led to what has been called the crisis of Marxism to which the birth of the Frankfurt School was a response. Marcuse’s work will go through many phases as he tries to unlock the key to revolutionary action. The next key move for him is to engage in a deeper study of Hegel as a source for critical social theory.