Paris is the city in which one loves to live. Sometimes I think this is because it is the only city in the world where you can step out of a railway station—the Gare D'Orsay—and see, simultaneously, the chief enchantments: the Seine with its bridges and bookstalls, the Louvre, Notre Dame, the Tuileries Gardens, the Place de la Concorde, the beginning of the Champs Elysees—nearly everything except the Luxembourg Gardens and the Palais Royal. But what other city offers as much as you leave a train?