Pragmatically, concepts serve as tools in reconstructive responses to emerging issues. Philosophers suggest we now live in a world of strangers and sociologists speak of a second modernity of risk. Theorists of trust need to address this emerging new context. With primacy in social action, new modes of trust arise from fitting together lines of action addressing new risks. An attendant development is the emergence of cosmopolitan identities appropriate to relationships among strangers. Trust is likely to underwrite future cooperation among strangers if global dynamics reduce inequalities and trustworthy actions generate functional trust. Consider the tale of the owl.