He could not describe his feelings in words. Actually, he could, but ‘words’ would have no meaning in the place he was in (or on?) They would exist only inside his head; they would not be received even when he spoke. It was like the classic philosophical question: does a falling tree in the forest make sound if there is no one to listen to it? He had the correct answer: probably not, and even if it did, it would make no difference; so for all intents and purposes, it did not make sound. He was thinking and speaking, but without anyone to even receive his messages, he could as well be a stone.
He was far too stressed out to realize that stones were conscious organisms themselves. They had tried all sorts to communicate with humans using every mode of communication available to them, but the humans wouldn’t just get them. Their signals were sometimes mistaken for background radiation from the big band, sometimes as solar magnetic activities, and sometimes as random error in instruments.
As the human lay there, Zorborkh detected a slight variation in low-frequency mechanical vibrations. He wished the scientists would someday invent detectors to entirely remove random fluctuations in detectors, and just show the real change in the variables being measured. Meanwhile the human was making noises loud enough to deafen an earth Elephant.