The thing is: when you're on a set, whether it's on location or in a studio - it's still a set, and you haven't got the approach, the proper approach, to a scene, you must be careful not to spook, not to get the wind up and just force things into position. The thing to do is to wait around until the idea comes, the right idea. And when it does, you'll recognize it.

John Huston
from Creativity with Bill Moyers (1982)