There's no great technical expertise in being a movie producer.

I never really studied business in school. I kind of wish I had, but how boring is that?

I wasn't taking so many drugs that it was messing up my creative processes. It was a very good period, 1968 - there was a good feeling in the air. It was a very creative period for everyone.

I don't find it easy dealing with people with drug problems. It helps if you're all taking drugs, all the same drugs.

Everyone knows what their roots are, but you've got to explore everywhere. You've got to explore the sky too.

I liked John a lot. He was the one I really got on with the most. We weren't buddy-buddies but we were always friendly. But after the Beatles and the Stones stopped playing clubs, we didn't see each other that much until he separated from Yoko, around 1974. We got really friendly again. And when he went back with Yoko, he went into hibernation ... when I went to visit someone in the Dakota, I'd leave him a note saying: 'I live next door: I know you don't want to see anyone, but if you do, please call.' He never did.

No one, but no one, is equal, or ever will be. Elvis was and is supreme.