I truly believe that when the history books are written, our age will be remembered for three things: the war on terror, the digital revolution, and what we did - or did not do - to put the fire out in Africa. History, like God, is watching what we do.

If I don't understand it, it must be art.

Rock 'n' roll is ridiculous. It's absurd. In the past, U2 was trying to duck that. Now we're wrapping our arms around it and giving it a great big kiss.

The idea that there is one kind of African is of course ridiculous. Sometimes African entrepreneurs want to kill you because you are saying public health is the priority, not roads. Of course they are right to press for that issue, but so are we right, I believe, to argue for example that millions of children could and should be vaccinated.

The strangest thing has happened. I really missed my dog. That's never happened to me before. You know, on a long tour you do hear people saying they miss their pets. I never have. But last night I started really missing my dog. It's very odd, 'cause I don't have a dog.

As a musician and a songwriter it is an act of the ego to believe that other people might be interested in your point of view. But it is usually an empathetic nature that gets you going in the first place. Music keeps the heart porous in many ways.

I wish to begin again on a daily basis. To be born again every day is something that I try to do. And I'm deadly serious about that.