What is creativity? Marcus du Sautoy, a mathematician and Oxford professor for the public understanding of science, offers this pert definition in his introduction: ‘Creativity is the drive to come up with something that is new and surprising and that has value.’ This, he argues, is possible in mathematics (he himself invented a new kind of symmetrical object) as well as the arts in general, or what he describes as ‘the outpourings of what I call the human code’.