Abstract
“Aleatory materialism” does not merely constitute that which, in an overly linear perspective, one would call the “fourth Althusser”. Even if, in the last decade of his life, Althusser did indeed attempt to construct a “new philosophy”, seen as an alternative to “dialectical materialism”, one should rather perceive, behind the past arguments, so assertive and sharp, advanced by the previous Althusser, something like a discreet practical layer, self-conscious or not, wherein such arguments would have found their true point of anchorage. What is at stake in this philosophy “starting from nothing” is what has always been the most necessary and the most unthinkable question, that of political subjectivation