If you pour your life into songs, you want them to be heard. It's a desire to communicate. A deep desire to communicate inspires songwriting.

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.

When people say, you know, 'Good teacher,' 'Prophet,' 'Really nice guy'... this is not how Jesus thought of Himself. So you're left with a challenge in that, which is either Jesus was who he said he was or a complete and utter nut case. You have to make a choice on that.

I'm a singer, not a politician, and I think you don't want the two to get confused. It's not OK to be on CNN talking about people starving and then tell the interviewer that your new album is coming out in six months.

Because you know when you first become famous, you start walking a little different because people are staring at you.

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.

I'm home a lot. Because I live in Ireland, we can live under the celebrity radar. I might go missing for a whole year.