"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
The Unforgettable Fire album title is a reference to "The Unforgettable Fire"—an art exhibit about the atomic bombing of Hiroshima. The band saw the exhibit in November 1983 in Japan while on the War Tour.