To walk is to lack a place. It is the indefinite process of being absent and in search of a proper. The moving about that the city mutliplies and concentrates makes the city itself an immense social experience of lacking a place -- an experience that is, to be sure, broken up into countless tiny deportations (displacements and walks), compensated for by the relationships and intersections of these exoduses that intertwine and create an urban fabric, and placed under the sign of what ought to be, ultimately, the place but is only a name, the City...a universe of rented spaces haunted by a nowhere or by dreamed-of places.

Michel de Certeau