"Rick Rubin has a larger looming presence on this album than his 'thank you' deserves. He asked 'Why can't more people cover U2 songs?' And it's because, with all the great sounds and arrangements, you can forget that there isn't a song there."
- Bono on Rubin's influence on Songs of Innocence
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The song 'A Day Without Me' was written in response to the suicide of Ian Curtis of Joy Division and reflects Bono's take on the selfishness of suicide, which is the dominant theme of the song.