“Between the idea of elaborating an urbanism and the thesis that all urbanism is an ideology is a profound modification. In fact, by saying that all urbanism was a bourgeois ideology, [the situationists] abandoned the problem of the city. They left it behind. They thought that the problem no longer interested them. While I, on the other hand, continued to be interested; I thought that the explosion of the historic city was precisely the occasion for finding a larger theory of the city, and not a pretext for abandoning the problem.”

- Lefebvre on the Situationists: An Interview