On numerous visits to Manhattan, I have found myself poking around the city trying to find a moment of quiet and once located a hint of it in Central Park during a windless, late-night snowfall. There I stood absolutely still in the lemon glow of the city, a sky full of snow. The city still roared from all sides, a thousand noises compressed down to just one. I counted that distant, mild roar as quiet, a welcome relief from the more pressing noises of the daytime city.