"Adam probably felt a little bit like the other three had lost it. Suddenly, from being in a rock 'n' roll band, he's with a bunch of guys who have got religion and are carrying Bibles in their luggage and occasionally getting together for a meeting to pray."
- The Edge on U2's early days
Get On Your Boots is about Bono taking his family on vacation to France and witnessing warplanes flying overhead at the start of the Iraq War. The chant "let me in the sound" was developed late in the recording sessions and became a theme throughout parts of the album.