There are small and large spheres. Some burst straight away, others stubbornly endure through time.
Bubbles deals with the small spheres that form between individuals.
It is useful to consider the general structure of the trilogy. As congenial as the postmodern preference for pluralistic metaphors may be, these metaphors also reveal that reason has hardly given up the task of once more transcending all spheres and of taking up a privileged, bird's-eye perspective beyond the foam. Sloterdijk bravely squeezes himself into the most hidden catholic spheres of intimacy, around which even theologians make a wide sweep. Here, in fact, one finds beautiful pearl-like gems of thought possessing great heuristic effect. The unconcerned survey of the entire history of civilization - even as it manifests itself in its more obscure lines of tradition, despite all possible objections, represents an advantage of postmodernity over a purist modernity that is both characterized and constricted by its scientism.