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?'

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

If I don't understand it, it must be art.

I accept the Old Testament as more of an action movie: blood, car chases, evacuations, a lot of special effects, seas dividing, mass murder, adultery. The children of God are running amok, wayward. Maybe that's why they're so relatable.

The less you know, the more you believe.

When you align yourself with God's purpose as described in the Scriptures, something special happens to your life.

U2 is an original species... there are colours and feelings and emotional terrain that we occupy that is ours and ours alone.