[...] Paul Celan distinguished between u-topia and utopia. U-topia, literally 'no-place,' is a nonexisting locus, whereas utopia meas a hope, an expectation, a vision of the future, something not existing yet. According to Ernst Bloch, utopia is a prefiguration, the realm of the 'not yet' (noch nicht). This is also the meaning of Celan's utopia, 'something open and free' to which poetry could give a form. Today, after the collapse of twentieth-century revolutions, utopia does not appear as a 'not yet', but rather as u-topia, a no-longer-existing place, a destroyed utopia that is the object of melancholy art. Realms of memory are places (topoi) created in order to remember hopes turned into no-places, something that no longer exists. The utopias of the twenty-first century still have to be invented.