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

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.

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

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.

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.

Facebook are an amazing team, a brilliant team. It's a technology that brings people together.

The most powerful idea that's entered the world in the last few thousand years - the idea of grace - is the reason I would like to be a Christian.