For those wondering how to deal with anxiety and depression, the first thing to consider is what you're putting into your mouth.

My compulsion to always be working has become less strong and my current business is purely down to this enormous alimony. If I wasn't doing this I'd be making documentaries about wildlife and other subjects that interest me.

The one thing I remember about Christmas was that my father used to take me out in a boat about ten miles offshore on Christmas Day, and I used to have to swim back. Extraordinary. It was a ritual. Mind you, that wasn't the hard part. The difficult bit was getting out of the sack.

This is the most important joke I've ever heard. Niels Bohr, the founder of Quantum Physics, had a friend to dinner. As the friend left, he noticed a horseshoe nailed above Bohr's front door. He said to Bohr, accusingly, "Niels, you're a great scientist. You can't believe in superstitions." Bohr answered, "I don't, but apparently it works anyway."As with confirmation bias, we tend to lean toward superstitions that benefit us.

I'm not sure what's going on in Britain. I don't know what's going on in London. Because London is no longer an English city, and that's how they got the Olympics. I mean, they said, "We're the most cosmopolitan city on Earth," but it doesn't feel English.

All humour is critical, you know? You make stupid jokes. I mean, stupidity is an infirmity, isn't it?

The most creative people have this childlike facility to play.