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 get to hear the really good or the really bad things in the press, but I don't read it. I can afford to say that because public opinion does not drive U2's audience.

At a certain point, I just felt, you know, God is not looking for alms, God is looking for action.

Let's not bequeath the pop charts to just children.

When a nation is over-reliant on one or two commodities like oil or precious minerals, corrupt government ministers and their dodgy associates hoard profits and taxes instead of properly allocating them to schools and hospitals.

We thought that we had the answers, it was the questions we had wrong.

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.