always fragile, because everything here touches its extremities. The world is everything that passes between us - ourselves and everything that happens to us, everything that becomes of our contacts, our gazes, our movements; and through referrals from skin to skin, from the fleeting to the immemorial, you reach, without even knowing it, the entire actuality of the world: the act of its existence. This act is made up of works and disasters, splendours, horrors, and catastrophes. As long as it is ours, it is the act of an infinite emergence that is all the sense there is: a sense that incessantly goes from skin to skin and is itself never enveloped by anything. The texts in this volume are all oriented by the concern for what is currently happening to us - we, late humanoids - when we arrive at an extremity of our history, whether this extremity should turn out to be a stage, a rupture, or quite simply a last breath.