My favourite movie quote is from Shakespeare in Love:

Philip Henslowe:   Mr. Fennyman, allow me to explain about the theatre business. The natural condition is one of insurmountable obstacles on the road to imminent disaster.
Hugh Fennyman:   So what do we do?
Philip Henslowe:   Nothing. Strangely enough, it all turns out well.
Hugh Fennyman:   How?
Philip Henslowe:   I don’t know. It’s a mystery.