One of the remarkable features of recent interest in the work of Louis Althusser has been the prominence granted to Althusser’s cultural criticism. However, aside from one notable exception, Althusser’s cultural criticism has not figured prominently in discussions of his late work, and the absence of Althusser’s cultural criticism from those discussions has perhaps unwittingly obscured both the genealogy of Althusser’s late aesthetic ontology and the logic of his last texts, of ‘The Underground Current of the Materialism of the Encounter’ (...) and related writings on aleatory materialism. By tracing the genealogy of the aleatory impulse in Althusser’s cultural criticism, it is possible to show how that work resonates in Althusser’s late texts including the larger unpublished manuscript from which ‘The Underground Current of the Materialism of the Encounter’ has been drawn. This reading of the philosophy of the encounter also allows us to understand the importance of Nicolas Malebranche for Althusser’s aleatory materialism. (shrink)