"It's a song that every generation has to sing, it's the eternal song. It's about what's possible and still everything is possible."
- Bono before the release of Window In The Skies, 2006.
The band considered releasing The Joshua Tree as a double-album that would have included B-sides. Bono was the most vocal proponent of the idea, whereas The Edge argued for the 11-track version that was ultimately released.