"It's a goodbye song of some kind. I feel like walking away from being in a band sometimes. For some people it may be like walking away from a a relationship. Sometimes you feel like walking away from life itself."
- Bono discussing 'Gone' in 1997
U2 intended to release No Line on the Horizon in November 2008; after composing 50 to 60 songs, they postponed the release because they wanted to continue writing.