"Oh, you know they're teaching me. My kids are kids are teaching me all the time. I have two girls (Jordan and Memphis Eve) who are both activists. They're a total pain in the ass. If you think I'm a pain in the ass, they're worse.
They will not accept that the loss of life that we take as the way things are in these far off places when they know it's so simple to change things. We just have to really want to."
However, he thinks his wife Ali is special. "My wife is so gorgeous. [I was] going to miss her on the road!" he said referring to his back injury.
He also says Bob Dylan was his overwhelming influence.
"When I was a young man and I was in a tiny little room in the north side of Dublin, I put on headphones and Bob Dylan would whisper all kinds of incendiary things into my ear.
And I don't know what it was exactly, but the sense I got from his voice and his songs was that the world doesn't have to be the way the world is and that things could change. They don't have to stay the same. You give it a kick and it might move and we're here giving it a kick."