Abstract
By proposing the notion of aleatory materialism, or Marxism of encounter, Althusser had three goals in mind: to give Marxism, finally in crisis, its philosophy; to identify this philosophy with an underground current starting with Epicure and Democritus; to provide the means to introduce points of heresy from which the crisis would gain intelligibility. This article purports to show that this form of materialism consists less in a new philosophy than in an ontology and a logic of the “not-much”, of the impoverishment of meaning and reason. The encounter is not a thesis on the materiality of the world, but on the conditions of thought of its very being: without origin, without purpose, without meaning, without necessity. By subscribing to such a thesis, one reintegrates within a reflection inhabited by emptiness, gap and difference, its outside, constituted by the singular practices of those who suffer and struggle in the emptiness and delinkage of the world