Don't be too clever for an audience. Make it obvious. Make the subtleties obvious also.

I'm not happy. I'm not happy at all.

I had one life. And what did I do? Wasted it in some palooka preliminaries in Spain, just before Hitler and Chamberlain warm up for the main event.

An actor entering through the door, you've got nothing. But if he enters through the window, you've got a situation.

I have ten commandments. The first nine are, thou shalt not bore. The tenth is, thou shalt have right of final cut.

An audience is never wrong. An individual member of it may be an imbecile, but a thousand imbeciles together in the dark - that is critical genius.

Now, what is it which makes a scene interesting? If you see a man coming through a doorway, it means nothing. If you see him coming through a window - that is at once interesting.