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

It's annoying, but justice and equality are mates. Aren't they? Justice always wants to hang out with equality. And equality is a real pain.

Pop music often tells you everything is OK, while rock music tells you that it's not OK, but you can change it.

It's a privilege to serve the poor, to be servants of noble Africans, but I better belong in the rehearsal room or in the studio with my band. That's where I want to be and I still wake up in the morning with melodies in my head.

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.

Sadly, I do my homework. I've a soft spot for the boring minutiae. I read the Charter of the United Nations before meeting with Kofi Annan. I read the Meltzer report, and then I'll read C. Fred Bergsten's defense of institutions like the World Bank and the I.M.F. It's embarrassing to admit.

As hard as it is, as ghetto as it is, hip-hop is pop music. It's the sound of music getting out of the ghetto, while rock is looking for a ghetto.