Book excerpt: Who among us has not experienced hearing a song that moved us deeply, that spoke to us in a truly spiritual way? Millions of fans around the world have found that inspiration in the music of U2, arguably the biggest band in the world today. This engaging and informative book examines the spirituality that drives U2, a band whose influence has spread far beyond music and whose songs encourage listeners to put their faith into action for the sake of the poor and marginalized.