If they had said, “You are a new personality,” it would have been much clearer. That would have fitted. They had made the mistake of thinking of a personality as some sort of possession, like a suit of clothes, which a person wears. But apart from a personality what is there? Some bones and flesh. A collection of legal statistics, perhaps, but surely no person. The bones and flesh and legal statistics are the garments worn by the personality, not the other way around.
Zen and the Art of Motorcycle Maintenance