You have to learn something more than just acting. You have to learn how to behave, how to fill your space on the stage or in film. You learn the difference also. That the film space is inner space, but you’ve got to fill it. You know, you watch Paul Newman, and he’s jam packed in a very small area of his face. All the energy that I would express in my whole body, he’s expressing right here: Zhooooom! That’s a hard one to learn for a stage actor.