Ah, I do believe in ghosts, yes. When I was very young, seven or eight, I used to have a nightmare about a particular place in a castle and this ghost, which I never saw. I used to wake up terrified and I even went to the doctor because it was every single night at the same time.
Then, later on, I joined a company and we played a place that was a castle. They said, 'This is where the white lady walks,' and it was the same room that I'd seen in my dreams! Having said that, I've never seen a ghost and I don't know that I believe in them, but that actually happened.