"Edge made me listen to [our old material] for The Best Of, and I was bracing myself, cause I think I sound like a very opinionated girl. Just screaming my head off. But then I actually listened to it and I thought, 'My God, there's pure joy here.'"
- Bono, 2000
During the Achtung Baby recordings Bono often howled his frustration on mistakes, after a while the band imposed a new band rule: the hyped-up Bono is permanently forbidden to drink coffee.