I feel like you are this or that because other people say so. I wouldn't know how to play a psychopath. I don't think about it that way. You think about playing the scene but if the other people say that guy is crazy, then you are.
Christopher WalkenLaurence Olivier said in an interview once that when he plays a tragedy he always aims for the funny parts, and the other way around. Because in a comedy you look for what's serious. I think that's true. Sometimes things are really funny if you're absolutely earnest. If you're really serious, it's hilarious.
Christopher Walken