well i believe i saw my father's ghost. When I was 5 my dad died and he built my house(before he died, obviously) When I was about 6 i woke up in the middle of the night and I saw him standing over my bed. He was in his normal clothes, a plaid shirt and jeans, only you could like see through him. it was really weird. Also I live in a huge mansion at school, and it is over 100 years old and alot of people have died, killed themselves and went crazy in it. So in my room last year there was a little boy, I didn't see him but my roomate did. And the people that live there now said they saw a little girl. And the other day my friend was in the basement doing her laundry and there is a door that goes to outside and she said she saw a little girl looking at her through the window from outside, and when she looked at the girl, the girl turned around and ran away, but she was in like a white nightgown and you could like see through it. So yes, I do believe in ghosts.