“One must know a bad performance to know a good one. You can't be middle-of-the-road about it, just as you can't be middle-of-the-road about life. I mean, you can't say about Hitler, I can take him or leave him. Well, I can't be middle-of-the-road about a performance, especially my own. I feel that if I can vomit at seeing a bad performance, I'm ahead of the game.”