Well, me, I just don't happen to believe in ghosts... particularly.
Dear Santa, we just wanted you to know that even though Mr. Thompson says that there was no such thing as Santa Claus, we didn't believe him. So please come or else it will make us look like dummies. Signed Wednesday and Pugsley Addams.
My advice is: stand firm for what you believe in until, and unless, logic and experience prove you wrong. Remember, when the Emperor looks naked, the Emperor is naked; the truth and a lie are not sort of the same thing. And there's no aspect, no facet, no moment of life that can't be improved with pizza.