ABSTRACT
The passage of the frontiers is always possible, and this possibility is, although minimal, the principle of a transformation. The task of the ontology of actuality, which is a historical ontology of what we are and how we became so, consists, then, in showing those limits that they can–and even shall, since they impede the achievement of freedom–remove, trespass, transform, because they are historical and then contingent. The limit acquires namely an objective nature: as the wall that separates a territory from another, the barrier that closes and prevents the passage, the door that delimitates a room and prevents the communication with the outdoor. The lines of a political map, for instance, are such that their destiny is to give rise sooner or later to new configurations. Indeed, sometimes reality surprises more than whatever concept, and the ideality of the limit is only what reality, even imperceptibly, shows us at every moment.
