If the history of metaphysics is, as Heidegger suggests, essentially humanist, the questions that have been addressed to humanism, united under the label of posthumanism, face the challenge of establishing a rupture with a bimillenary hegemony of the human against the non-human. This paper will be interested in problematizing the way in which the humanist model has attributed to man the privilege of being the only being capable of acting and shaping the world. The objective will be to explore an (...) expanded perspective of agency towards the animal, vegetable and material world. From the proliferation of the possibilities of agency we will discover, in turn, different ways of forming and inhabiting worlds: the world as a totalizing sphere, as a set of surrounding worlds and as a mixture of material agencies. Finally, this perspective tending towards the de-hierarchization of human agency will be contrasted with the difficulties posed by the notion of the Anthropocene. Man's responsibility for the geological scope of his activity re-emphasizes the centrality of his capacity for agency, thus showing the contradictions that arise in attempts to go beyond humanism. (shrink)