Abstract
In 1990, Antonio Negri pointed out some problems with Deleuze's political philosophy. Substituting infra-structures for life or desire, as constitutive dimensions of power formations, did not imply giving up on Marx, but it certainly did imply a change in the table of conceptual analysis and a profound renovation of the questions that pertain to militant praxis. Taking this into account, we intend to explore the sense of a rare fidelity to Marx, and a certain idea of intellectual commitment that, reframing its objects and its instruments, pretends to renew political thinking in order to confront the unforeseeable of new knowledge, new techniques and new political facts