A great answer to the question of “why do you write long sentences?” The respondent is László Krasznahorkai, the author of Satantango.
If I go on to consider my “ecstatically long sentences,” at first nothing particular comes to mind. Then, on reconsideration, I suspect that these long ecstatic sentences have no relation to theory or to any idea I might have about the Hungarian language, or indeed any language, but are the direct products of the “ecstatic” heroes of my books, that they proceed directly from them. It is not me but they who serve as narrators behind the book. I myself am silent, utterly silent in fact. And since that is the case I can hear what these heroic figures are saying, my task then being simply to transcribe them. So the sentences in question are really not mine but are uttered by those in whom some wild desire is working, the desire being that those to whom they address their sentences should understand them correctly and unconditionally. That desire lends their speeches a mad urgency. The urgency is the style. And one more thing: the speeches these heroes are so desperate to rattle off are not the book, not in the least! The book is a medium, a vehicle for their speeches. They are so convinced of the overwhelming importance of what they have to say, that their language is intended to produce a magical effect without necessarily carrying a concrete meaning: it is an embodiment of the ecstasy of persuasion by magic, the momentum of the desire for understanding.