My logic is simple and not simply symbolic: If a loud noise, such as the passing of an aircraft, can affect many square miles, then a natural place, if maintained in a 100 percent noise-free condition, will likewise affect many square miles around it. Protect that single square inch of land from noise pollution, and quiet will prevail over a much larger area of the park.

Gordon Hempton, John Grossmann, One Square Inch of Silence-…, loc. 55