"That song 'MoFo' is hardcore. If I could put my whole life into one song, it'd be something close to that. It's a funny thing to be able to say - that a song sums you up - cause maybe that means you're not that interesting after all."
- Bono in 1997
The song Heartland is about a trip Bono and Adam made after the Joshua Tree tour through America by car, they passed many placed and states and Heartland contains phrases of Bono's journey of that trip.