Talking about him a bit more, the ghost was still mindlessly floating around. Only good thing about it was that he was able to keep a normal pose, so Harry would not be embarrassed. But he still didn’t do anything, and this planted suspicion and doubt in the boy’s head. Harry was confident in his thoughts, but just in case... In that unlikely situation... He can not tell his mummy or uncle about the voice in his head. He has been hiding his dreams for years, so it mustn't be too different. Right?