The demands of our reality function require that we adapt to reality, that we constitute ourselves as a reality and that we manufacture works which are realities. But doesn't reverie, by its very essence, liberate us from the reality function? From the moment it is considered in all its simplicity, it is perfectly evident that reverie bears witness to a normal useful irreality function which keeps the human psyche on the fringe of all the brutality of a hostile and foreign non-self.