Even if this is pushing the principle beyond its limits and reducing things to the absurd, even if a linguistic meaning can never be delivered of its inherence in some word or other, the fact remains that the expressive process in the case of speech can be indefinitely reiterated, that it is possible to speak about speech whereas it is impossible to paint about painting, and finally that every philosopher has dreamed of a form of discourse which would supersede all others, whereas the painter or the musician does not hope to exhaust all possible painting or music.