In the Eleusinian mysteries, they would always warn people, "if you go in here, your ego will die. You're going to have to confront all your past hang-ups, strip them off, and be a changed person." One emperor of Rom who wanted to be initiated in the Eleusinian mysteries said, "That's interesting, I approve of what you're doing, but I don't want to be changed.
Your Brain Is God (ed. Ronin Publishing, 2001) - ISBN: 9781579511142