Abstract
This article inquires into the clinical figure of paranoia and its constitutive role in the articulation of the nation-state discourse in Europe, uncovering a central tension between a principle of integrity and a dualist spatial configuration. A conceptual distinction between ‘border’ (finis) and ‘frontier’ (limes) will help to expose the political effects of such a tension, unveiling the way in which a solid and striated organisation of space has been mobilised in the topographic antagonism of the nation, sustaining the phantasm of a self-enclosed, self-sufficient finitude.