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

I love America and I hate it. I'm torn between the two. I have two conflicting visions of America. One is a kind of dream landscape and the other is a kind of black comedy.

It's stasis that kills you off in the end, not ambition.

In my view, the only thing worse than a rock star is a rock star with a conscience.

The less you know, the more you believe.

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.

What turns me on about the digital age, what excited me personally, is that you have closed the gap between dreaming and doing. You see, it used to be that if you wanted to make a record of a song, you needed a studio and a producer. Now, you need a laptop.