U2's best work has always been when we didn't know what we're doing.

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.

I used to love Kurt Cobain, when he was telling people we're a pop band. People would laugh, they thought of it as good old ironic Kurt. But he wasn't being ironic.

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.

U2 was involved in Live Aid, and I ended up going to Ethiopia and working there for some time with my wife, Ali.

God is in the slums, in the cardboard boxes where the poor play house. God is in the silence of a mother who has infected her child with a virus that will end both their lives. God is in the cries heard under the rubble of war. God is in the debris of wasted opportunity and lives, and God is with us if we are with them.

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