I have too much respect for the characters I play to make them anything but as real as they can possibly be. I have a great deal of respect for all of them otherwise I wouldn't do them. And I don't want to screw them by not portraying them honestly.
I think public service is a calling and you do it as long as the things that brought you into the office can continue getting you up in the morning and as long as there's still work to get done.
