I personally have seen two spirits, one was my relative that had passed away when i was about 8 years old, i woke up from sleep and she was under the door way to our room, top part of torso only and bathed in a bule glow she waved at me then vanished as if saying goodbye, about 30 minutes later we get a call from the hospital telling us she had passed away, i already knew this before we got the phone call i was calm the whole time and still remember this some 50 years later.