In this survey of Roberto Esposito's thought, Bonito Oliva reflects upon the stakes of reading biopolitics in an immunitary key. After sketching the features of a "fundamental crisis in the sense of coexistence," the author, moving from ancient to modern philosophy, emphasizes the centrality of fear in Esposito's understanding of the origins of community. The importance of fear explains in part the intrinsic relation community has to immunity for Esposito, in which immunity is figured primarily as a negative form of (...) community. In the essay's closing pages, the author shows how deeply immunity informs Esposito's understanding of contemporary biopolitics. She goes on to note Esposito's indebtedness to Hegel, especially with regard to the negative, and echoes Esposito's and Deleuze's own calls for the construction of "an immanent norm of life.". (shrink)