This article reflects on historical arguments about migration in conceptualisations of Europe, highlighting an ambivalent support of migration within Europe on the grounds of mutual cultural enrichment. There is a strong tradition, dating back to French and German eighteenth-century thinkers, such as Herder, Voltaire and Fichte, of citing cultural diversity, plurality and exchange to construct an idea of Europe. ‘Europolitanism’, the ideal of Europe as an open space of welcome movement and unprejudiced exchange, conceals, however, exclusionary tendencies: exchange has never been intended for all social groups. Contemporary theorisations of Europe, based ostensibly on cultural exchange, synthesis and plurality, have their roots in Romantic and Enlightenment thought, but then as now there are questions to be asked about participation in pan-European identity formation.