There appear, like so many projects (or chimeras, who can tell as yet?), the themes of a universal formalization of all discourse, or the themes of an integral exegesis of the world which would at the same time be its total demystification, or those of a general theory of signs; or again, the theme (historically probably the first) of a transformation without residuum, of a total reabsorption of all forms of discourse into a single word, of all books into a single page, of the whole world into one book.