Music is the fountainhead: everything comes from that. At the moment, I'm getting intoxicated on Beethoven, and I use Pink Floyd for inspiration while making a film. Their music contains a sound for almost everything I do.

Get the right actor, and the job's halfway done. I've only miscast major people twice in my life – out of respect to them, I won't tell you who. After a couple of days' shooting, I had to tell them I was letting them go. It was hideous.