Oh, Lord, that is way too hard. I want so many things, so I make do instead with hundreds of museum postcards that I have stuck all around my office: a dozen Audubon birds (I’d adore a long hall hung with the complete double elephant folio), Thomas Eakins, a Morris Lewis, an Ed Ruscha, several Goyas, a William Dunlap of a dog running through intense green, a Julian Onderdonk field of bluebonnets, Turner’s Queen Mab’s Cave, a Manet still life, a lush and hilarious Paul de Vos from the Prado called Fight of Cats in the Pantry, an Indian miniature of an emerald green bird, Courbet’s breathtaking The Origin of the World, and on and on and on. The pressure is too great to choose just one, so I’d probably settle for something I know I’d love to look at all the time: one of Luis Melendez’s 18th century still-lives, also from the Prado. They are extraordinary and on view right now at the National Gallery in D.C. I urge you to get there before August 23, or failing that, to follow them to L.A. or Boston.