It is your passion that empowers you to be able to do that thing you were created to do.
I will never do another TV series. It couldn't top I Love Lucy, and I'd be foolish to try. In this business, you have to know when to get off.
Whether it's possible or not, being a doctor, you take an oath. To care for your patient, not to kill them. You take an oath to do things that are proper in the medical world. Not to administer something outside of a hospital setting that's not even your area.