This article suggests that the historical figuration of Islam as well as the discourse of secularization has played a fundamental role in the constitution of Islam’s externality to Europe. The historical figuration of Islam as Europe’s enemy is haunting Europe. The European secularist anxiety today, which insists on the separation between the domains of the private and the public needs to be understood against the backdrop of this history. If Islam’s inability to separate the religious and the political was historically (...) the dominant motif through which Islam was registered as the arch-enemy, the post-secular, post-Enlightenment period registers Islam as an enemy through a cultural gesture. Derrida’s understanding of spectrality and the concept autoimmunity are deployed to suggest that Islam as a specter haunting Europe undermines the sovereign constitution of a self-identical Europe, but this haunting needs to be seen as Europe’s chance for a self-destructive conservation of Europe. European identity has to be rethought and renewed differently and this rethinking requires that we attend to the present as well as the past and future of Europe, which requires the opening of Europe to otherness and responsibility to the other. Such a rethinking of Europe’s history necessitates thinking about colonialism as well the living embodiments of this colonial legacy today, which are the immigrants. (shrink)