And yet, in many separate ways, the people of the city express certain common emotions. The forms and details are different for every generation and every group, but certain emotions have continued to repeat themselves for centuries. One is surely greed, the unruly desire to get more money by any means possible, an emotion shared by citizens from stockbrokers to muggers. Another is sudden anger, the result of so many people living in so relatively small a place. Another is an anarchic resistance to authority. But far and away the most powerful of all New York emotions is the one called nostalgia.

The city is, in a strange way, the capital of nostalgia. The emotion has two major roots. One is the abiding sense of loss that comes from the simple fact of continuous change. Of the city’s five boroughs, Manhattan in particular absolutely refuses to remain as it was…