Two modes of thought can be distinguished, a poetical thought that has its eyes to the future, and a conservative, immunist or mechanistic thought which builds its road on the ground of past sediments. The defining characteristic of the first mode is its monstrosity. A future that is not monstrous is not a future, but merely a reflection of the past. These two modes of thought can be exemplified in terms of two functions of the brain, namely dreaming and remembering; that which liberates and that which binds. The social machine must be considered like a collective brain that does not operate only as a collective memory but rather as a collective dreaming-machine. It is only in this condition that history opens a place for revolution, as Marx writes, “The social revolution of the nineteenth century cannot draw its poetry from the past, but only from the future”.