"The Party of Humanity frames its discussion about emotions, social conflict, and aesthetics within two broad theories: the emerging field of evolutionary psychology and Kantian moral philosophy. By studying how eighteenth-century Britons experienced the demands of their social identities, Vermeule argues, we can better understand the most salient problems facing moral philosophy today - the issue of self-interest and the question of how moral norms are shaped by social agendas."--BOOK JACKET.