We received the following missive in our e-mail and have found it to be a useful reference:

This was written by Becky Ransey of Indiana (a doctor's wife), and I want to share it with you. She was over recently for coffee and smelled the bleach I was using to clean my toilet and counter tops. This is what she told me:

Question: If you could live forever, would you and why?

Answer: "I would not live forever, because we should not live forever, because if we were supposed to live forever, then we would live forever, but we cannot live forever, which is why I would not live forever."