The room on the rue Saint-Jacques where The Society of the Spectacle got written was at once an austere cell—with nothing on the shelves, I remember, but a few crucial texts (Hegel, Pascal, Marx, Lukács, Lautréamont's Poésies) laid open at the relevant page—and the entryway to Debord's minuscule apartment, through which friends and comrades continually passed. 
TJ Clark