Diz David Mamet da interpretação no cinema:

Actors don't need to put on some extraneous character. Their character exists in the action and the words. The best actors, people like Jimmy Stewart and Anna Magnani, are not pretending to be a character; they're saying the words and letting the story tell itself. On the other hand, that's why Laurence Olivier is terrible in films. He eats up the scenery. The audience ends up paying more attention to the actor's technique than to the story. Looking for a "character" to imitate may be fun for the actor, but it's less fun for the audience. When you listen to Glenn Gould playing Bach, you don't say what great technique he has. You say how great Bach's music sounds. It's the same thing with film acting.