I would like to thank Ivan Ermakoff for his comments and Jeff Isaac for inviting us to participate in this critical exchange about our work. As Ermakoff points out, the continuity of negative association in the history of political thought is striking, and this continuity is an important part of my argument about the role of negative association in collective action and the lessons that ought to be drawn from this. The precise nature, extent, and limits of this continuity, however, are indispensable parts of my story, ones that Ermakoff leaves out. As I note in Fear of Enemies and Collective Action, when one looks more closely, one realizes that the genealogy of negative association consists of episodes of action and reaction. The thinkers I study agree about much, but they also disagree quite strongly. Taken together, the continuity and disagreement show that it is a mistake to consider the discourse, as Ermakoff does, to be simply atemporal and represented by any single thinker.