Speech and prose are not the same thing. They have different wave-lengths, for speech moves at the speed of light, where prose moves at the speed of the alphabet, and must be consecutive and grammatical and word-perfect. Prose cannot gesticulate. Speech can sometimes do nothing else.

"Finnegans Wake", in James, Seamas & Jacques: Unpublished Writings (London: Macmillan, 1964) p. 161.