With any part you play, there is a certain amount of yourself in it. There has to be, otherwise it's just not acting. It's lying.
“While we are guarding the country, we must accept being the guardian of the finest ethics. The country needs it and we must do it.”
“We found out the Gemini spacesuit was, well, oxygen was flowing to keep me cool as well as to breathe, and it wasn't good enough. My visor got fogged.”