because what you do is all inside. >> some people think about acting as though you are wearing a mask. but actually, most of the time you're taking away a mask. there's something that the camera sees that no matter what you do the camera finds. >> actors that i loved growing up, i loved spencer tracy. you always knew where he stood in everything. >> because in the final analysis, it doesn't matter a damn what we think. >> you look at his mark down on the ground where you have to stand so that you're in focus. but if the lens catches you, then everyone who's watching you realizes that you're lying to them, you're cheating. well, he would look right at his mark and he wouldn't cheat. he wouldn't go like that. he would look at his mark and go -- literally do this and he'd walk over and stand there. then he'd sit up like that and