This article revolves around the discovery of matter. The first section concerns science studies. It emphasizes the importance of a focus on practice and performance as a way of undoing the ‘linguistic turn’ in the humanities and social sciences. The key concept here is that of a dance of agency. The second section reviews a variety of examples of this dance in fields beyond the natural sciences — civil engineering, pig farming, and convivial relations with dogs, architecture, technologies of the self, biological computing, brainwave music, and certain hylozoist and Eastern spirituality. This article focuses on contrasting forms that dances of agency and their products can take, depending on the presence or absence of an organizing telos of self-extinction. The third and final section reflects on the significance of this contrast for a politics of theory. This article traces the discovery of matter followed by the concepts of method, time, and agency.