Because of its rhetorical nature, the notion of cosmopolitanism is sometimes understood as having a fixed definition. As this is not the case, parts of this overstrained concept have been replaced by the concept of conviviality. In some discussions, Immanuel Kant’s understanding of hospitality as a cosmopolitan right has been criticised and, in some cases, this has resulted in a rejection of the idea of cosmopolitanism. This has not least been the case in recent debates about refugee arrivals in Europe. This chapter, however, argues that it is worth paying attention to the historicity of conceptual frameworks, and that cosmopolitanism should not be abandoned, but instead be read as a utopian idea—as a reflexive method for imagining better or alternative futures in time and space.