How does literary objecthood contend with the challenge of writing objects that emerge at an extreme limit of material presence? Jacob McGuinn delves into the ways literature writes this indeterminate presence in the context of pre- and post-'68 Paris, a vital moment in the history of criticism. The works of poet Paul Celan, philosopher Theodor Adorno, and writer Maurice Blanchot highlight how the complexities of reading such a dematerialized object are part of the indeterminacy of material itself. Indeterminate objects--glass, snow, walls, screens--are subjects Celan describes as existing in "meridian" space, while for Adorno and Blanchot, criticism not only responds to this indeterminacy but also takes it as its condition. Reading at the Limits of Poetic Form: Dematerialization in Adorno, Blanchot, and Celan shows how these readings simultaneously limit the object of criticism and outline alternative ways of thinking that lie between the models of critical formalism and historicism, ultimately revealing the possible materiality of literature in unrealized history, incomplete politics, and nondetermining thinking.