Thousands of years people have taken drugs, whether it's alcohol, which was invented about 5,000 years ago. People have been using that. And all kinds of marijuana and all these things, tobacco. So all these drugs have been - it seems to be the propensity of human beings to want to use them.

I suppose you do think about the time that's allotted to you more than when you were younger. The mortality thing obviously has a stronger pull for you. It's an imminent truth; it's not necessarily a bad thing. You realize - much earlier than my age now - that you won't be able to play for England's football team, just to take a really crass example. So you can't have that life again. Unless you believe in reincarnation or whatever. Reincarnation? That's a whole other question. I find people who talk about that sort of thing in interviews idiotic. And I don't want to go down with them.

Don't you think it's sometimes wise not to grow up.

People have different personalities when they're drunk or take heroin, or whatever drugs.

There is something I like about talking to journalists that really goes beyond promotion because you aren't just talking to the journalist, but you are talking through them to people who presumably are fans of the Rolling Stones. The interviews give you a chance to say a few things and maybe clear up some of the things people read about the band.

I see songwriting as having to do with experience, and the more you've experienced, the better it is. But it has to be tempered, and you just must let your imagination run.

I didn't want to make teenage comedies, and I didn't want to make really trashy films. I wanted to make films that were a bit challenging.