A friend sent me this email, which seems appropriate:
There was a knock on the door this past Saturday morning. I opened it to find a young, well-dressed man standing there who said, "Hello sir, I'm a Jehovah's Witness.
"Hello," I said, "Come in and sit down."
I offered him a fresh cup of coffee and asked, "What do you want to talk about?"
He said, "Beats the shit out of me, nobody ever let me in before."