It's still very difficult for me to rely. Your weakness, the blessing of your weakness is it forces you into friendships. The things that you lack, you look for in others.

We can't fix all problems but we must fix the ones we can

I felt rich when I was 20 years old and my wife was paying my bills. Just being in a band, I've always felt blessed.

The great music for so many artists - the Beatles, the Rolling Stones - was always at the moment when they were closest to pop. It would be easy for U2 to go off and have a concept album, but I want us to stay in the pop fray.

Ethiopia didn't just blow my mind; it opened my mind. Anyway, on our last day at this orphanage a man handed me his baby and said, 'Would you take my son with you?' He knew, in Ireland, that his son would live, and that in Ethiopia, his son would die.

There was a moment when Prince did rock & roll with a sponge-y seductive sound. I think that's what was in our head for 'Get On Your Boots.' But actually, the song is much more punk rock.

Technology is huge; I wanted to learn about it. People might say that's odd, but I think it's odd if artists aren't interested in the world around them. I'm always chasing that.