Our heart has a brain and is able to "think" by itself, without our head brain. So it seems that it could take decisions "without the consent of the head". If you take a foetus, his heart beats before the full growth of his brain. And our brain can die but our heart can still beat. And it appears that our heart would make us take decisions...
My views are similar to Aaron's on this topic. My heart wants to believe in a higher power but knowing about the evil that is unleashed on innocent people, particularly children, makes me skeptical. My mind is not closed to the idea of ghosts or demons.
I guess I believe in ghosts. Ghost movies freak me out, so I must believe in them. And I hope they exist, because that means there is an afterlife. I just hope they are kind and loving and not vengeful.
I guess there could be many reasons a ghost would hang around Earth. I think if I had the choice I would want to be a ghost (or guardian angel) so I could watch over my family.
This sounds silly, but when I was a child I had my bedroom in the attic. One night my radio turned itself on. It freaked me out. It kept doing that till I pulled the plug out. Guess what. It turned itself on again. It was so weird. I've tried to find a logical explanation. In my sane moments I like to believe it was a dream. ;-) When I'm at my parents house I avoid the attic though ;-).
My brother died in a car accident when he was 15. I was only 3 years old. And when I was 9, I started hearing his voice calling me to join him. I could see the place where he died and the blanket they used to cover his corpse. It was frightening so I started to pray and to visit his tomb. And his calls stopped.
Not so sure about demons though.