The codes and codswallop surrounding Leonardo da Vinci
‘If you look at walls soiled with a variety of stains or at stones with variegated patterns,’ Leonardo da Vinci advised fellow painters, ‘you will therein be able to see a resemblance to various landscapes graced with mountains, rivers, rocks, trees, plains, great valleys and hills in many combinations.’ By an irony of history, Leonardo (1452–1519) has come to resemble that stained wall: a Rorschach blot in which viewers discern phantoms of their own imagination. This is, of course, to some extent the fate of all celebrities, and Leonardo was the first true artist celeb — the forerunner of a long line descending through his younger contemporaries Michelangelo and Raphael down to Picasso, Andy Warhol and Damien Hirst.