In The Godfather, for instance, they say they won't deal drugs because they have a code of behaviour. He is the last remnants of that. So playing someone like that, who is also in pain with his kidney stone, means you're beginning to find a dimension of the guy who is king and all show and the private guy who is in pain.

When I was 18 and not sure whether I wanted to be an actor, I realised that a playwright has no voice without an actor. That's my reason for acting: to get that character as right as possible for my writer. And I have never changed my philosophy.

There are clues in the script... he will say "I think drugs are immoral"'... but the guy who says that kills, tortures, pimps and has whores working for him. There is this strange morality going on, which is rather like the Mafia.

Deep inside, I am desperate to do comedy.

I'm 64 years old, and I've been acting now for 42 years. Only recently have I thought to myself, 'Hmmm, it may be interesting to start directing.'

The great exception to that, of course, is Johnny Depp, who is absolutely the ultimate character actor. Johnny Depp is the future of the character actor and thanks to his success maybe we will see the return of an era when my sort of actor is back in vogue. It's not in vogue for me to be in Hollywood movies as lots of different people.

I was a typical teen growing up in the 1960s, when everybody was into gurus and meditation.