"They believe, these inhabitants that another . . . [city] exists underground, the receptacle of 

everything base and unworthy

that happens to them, and it is their constant care to erase from the visible . . . every tie or resemblance to the lower twin."
 

"In the place of roofs 
they imagine that the underground city 
has overturned rubbish bins, with cheese rinds, greasy paper, fish scales, dishwater, 
uneaten spagetti, old bandages . . . "

EXIT