Mandela's heroism is the heroism of a man who suffered so badly for what he thought of as freedom. And yet when he had the upper hand he has this incredible self-control and these incredible leadership qualities.

Selling out is doing something you don't really want to do for money. That's what selling out is.

Poverty breeds despair. We know this. Despair breeds violence. We know this. In turbulent times, isn't it cheaper, and smarter, to make friends out of potential enemies than to defend yourself against them later?

The only person who ever called me Paul was my father, so I always associate it with doing something wrong, you know. So, you know, occasionally, people will come up to me on the street and try to, you know, ingratiate themselves and call me Paul. I don't like it, actually.

I don't like the name, U2, actually.

I believe that Jesus was, you know, the Son of God. And I understand that... we need to be really, really respectful to people who find that ridiculous and... preposterous.

What's so powerful about the Psalms are, as well as they're being gospel and songs of praise, they are also the blues.

It's much easier to be successful than it is to be relevant. The tricks won't keep you relevant. Tricks might keep you popular for a while, but in all honesty, I don't know how U2 will stay relevant. I know we've got a future. I know we can fill stadiums. And yet with every record, I think, 'Is this it? Are we still relevant?'

I am, as a character, at times, a little overbearing. I recognize that.

I think carrying moral baggage is very dangerous for an artist. If you have a duty, it's to be true and not cover up the cracks.

Marriage is this grand madness, and I think if people knew that, they would perhaps take it more seriously.

I'm actually starting to like more and more people who have convictions that are unpopular.

History, like God, is watching what we do.

It's an amazing thing to think that ours is the first generation in history that really can end extreme poverty, the kind that means a child dies for lack of food in its belly.

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

The world is more malleable than you think and it's waiting for you to hammer it into shape.

I think 'Invisible' is a great song, but I don't know how accessible it is.

I truly believe that when the history books are written, our age will be remembered for three things: the war on terror, the digital revolution, and what we did - or did not do - to put the fire out in Africa. History, like God, is watching what we do.

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

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.

Where you live in the world should not determine whether you live in the world.

Facts, like people, want to be free - and when they're free, liberty is usually around the corner.

Happy the country that lives on nothing but its wits; cursed be the one that thinks it can get rich by planting or digging or drilling for wealth.

It's so sweet, I feel like my teeth are rotting when I listen to the radio.

The great moments of rock 'n' roll were never off in some corner of the music world, in a self-constructed ghetto.

Laughter is eternity if joy is real.

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.

Music fills in for words a lot of the time when people don't know what to say, and I think music can be more eloquent than words.

I'm the man that brought you the mullet.

Because I was suspicious of the traditional Christian church, I tended to tar them all with the same brush. That was a mistake, because there are righteous people working in a whole rainbow of belief systems - from Hasidic Jews to right-wing Bible Belters to charismatic Catholics.

As a rock star, I have two instincts, I want to have fun, and I want to change the world. I have a chance to do both.

Until it's on the radio or online, it's not real. With U2, our album isn't finished until it's in the stores.

But there is a difference between cozying up to power and being close to power.

Rock stars are good at making noise.

Music can change the world because it can change people.

Jesus isn't lettin' you off the hook. The Scriptures don't let you off the hook so easily... When people say, you know, 'Good teacher', 'Prophet', 'Really nice guy' ... this is not how Jesus thought of Himself.

I really have had to swallow my own prejudice at times.

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.

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.

What really turns me on about technology is not just the ability to get more songs on MP3 players. The revolution - this revolution - is much bigger than that. I hope, I believe. What turns me on about the digital age, what excites me personally, is that you have closed the gap between dreaming and doing.

Rock 'n' roll is ridiculous. It's absurd. In the past, U2 was trying to duck that. Now we're wrapping our arms around it and giving it a great big kiss.

Every era has its defining struggle and the fate of Africa is one of ours. It's not the only one, but in the history books it's easily going to make the top five, what we did or what we did not do.

The less you know, the more you believe.

When you truly accept that those children in some far off place in the global village have the same value as you in God's eyes or even in just your eyes, then your life is forever changed; you see something that you can't un-see.

I have been working for Africans since I was 18, when I got involved with the Nelson Mandela concerts. I got involved with debt cancellation because Desmond Tutu demanded that the world respond to that situation.

Contrary to reports, this boy is not a billionaire or going to be richer than any Beatle... and not just in the sense of money, by the way; the Beatles are untouchable - those billionaire reports are a joke.

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.

Africa will thrive.

Celebrity is ridiculous and silly and it's mad that people like me are listened to - you know, rap stars and movie stars.