People have long known in America what many in Europe have come to grasp--that we can hang together without a common religion or even delusions of common ancestry. In the second decade of the twenty-first century, various independence movements gained traction in Europe, from Caledonia to Catalonia. Neither the logic of territorial integrity nor that of national sovereignty can resolve such matters. But let the arguments not be made in terms of some ancient spirit of the Folk; the truth of every modern nation is that political unity is never underwritten by some preexisting national commonality. What binds citizens together is a commitment, through Renan's daily plebiscite, to sharing the life of a modern state, united by its institutions, procedures, and precepts.