Jean-Luc Nancy, In Place of Utopia:
However, Utopia as such is determined by a program of completion. Art, on the other hand, only completes the work in order to open onto an outside that it harbours but that it cannot contain. One could say, in a word: the work of art is not an island and the one who inhabits it (the artist or her or his audience) is not Robinson: she or he does not restart a world of her or his own but engages with everyone’s world in the spacing that she or he opens.
Taken from Existential Utopia: New Perspectives on Utopian Thought, Michael Marder & Patricia Vieira