There is no such thing as:
- Aliens (in the sense of intelligent creatures living or contacting Earth yet). I'm hopeful that there are a few somewhere in our galaxy.
- Ghosts
- After-life
- Multidimensional existence and multiverse


This is all crap that you start to believe if you isolate yourself from human contact, the brain starts to fail or you read pseudoscience.

Most of occult, esoteric, magic and mysticism are crap, pure crap, spew out by someone with delusions or wanting to make quick bucks, because there are always useful idiots willing to believe in this garbage.