What I love about the theater is that you know who you're acting for: your audience. And the thing I find really hard in film is, you don't. The audience is invisible. And we're sitting there, hoping there's other people out there.
We have no need of other worlds. We need mirrors. We don't know what to do with other worlds. A single world, our own, suffices us; but we can't accept it for what it is.