“To authors, the text is sacrosanct, and any accompanying visuals – whether on the cover or the page – are there to serve it. To artists, the text is only one of several considerations: colour, shape, design, texture and technical innovation are at least as important. That’s why authors can be less than thrilled when a Matisse, Picasso or Damien Hirst collaborates on an illustrated edition. The problem isn’t so much competing egos as conflicting agendas.”