Alzheimer's is a horrible thing. Some people are naive about it. They think, 'Oh it's just your memory,' but my mother was in terrible pain. Your body closes down. She didn't know if she'd eaten or if she wanted to eat. She couldn't remember how to walk. Towards the end, she didn't know us. It came gradually, then it got worse.

We stay in U2's hotel. They bought a hotel, The Clarence, a nice place and it's in an area where everything's happening, so many fantastic restaurants and bars and the people are so friendly.

When I was young, I used to wear a lot of wigs, and I was running on stage at a gig and tripped over and it fell off. It was in the 1970s, and Swansea were doing really well in the league, and most of the team were there. I almost died, but I picked it up, put it back on my head and carried on.

I remember when the Atkins diet arrived; I lost 16 lb in the first month, but when I stopped, it all went back on again.

Each project is torturous and joyful, and it's always an inspiration.

One of the standards on which your happiness is based, now and in your future, is moral purity.

When I was waiting tables, washing dishes, or mowing lawns for money, I never thought of myself as stuck in some station in life. I was on my own path, my own journey, an American journey where I could think for myself, decide for myself, define happiness for myself.

One major challenge within happiness is loneliness. The more I've learned about happiness, the more I've come to believe that loneliness is a terrible, common, and important obstacle to consider.