Why is Cortazar writing this?

"Why am I writing this? I have no clear ideas, I do not even have ideas. There are tugs, impulses, blocks, and everything is looking for a form, the rhythm moves into play and I write within that rhythm, I write by it, moved by it and not by that thing they call thought and which turns out prose, literature, or what have you. First there is a confused situation, which can only be defined by words; I start out from this half-shadow and if what I mean (if what is meant) has sufficient strength, the swing begins at once, a rhythmic swaying that draws me to the surface, lights everything up, conjugates this confused material and the one who suffers it into a clear third somehow fateful level: sentence, paragraph, page, chapter, book. This swaying, this swing in which confused material goes about taking shape, is for me the only certainty of its necessity, because no sooner does it stop than I understand that I no longer have anything to say." --Julio Cortazar