"We got a lot of people who were uninterested in U2 to be mad with U2. And I would call that an improvement in the relationship."
- Bono on the iTunes release of Songs of Innocence
The cover art for No Line on the Horizon is a photograph of Lake Constance, taken by Japanese photographer Hiroshi Sugimoto; titled Boden Sea, it is one of 200 pictures in his Seascapes collection. The image was the inspiration for Bono's lyrics on the track "No Line on the Horizon".