“Everyone collects souvenirs, whether they call them that or not. They're evidence that we’ve taken part in the great dance of life – been places, seen things. They’re connections between us and something grander and more eternal than we are. And they belong to us. Tourists shooting blurry mobile-phone-camera snapshots of the ‘Mona Lisa’ or Niagara Falls want to prove they were there, not to have art to hang on their walls.”