“Then she broke down, for with the cessation of activity came an unexpected terror —silence. She had never known silence, and the coming of it nearly killed her —it did kill many thousands of people outright. Ever since her birth she had been surrounded by the steady hum. It was to the ear what artificial air was to the lungs, and agonizing pains shot across her head. And scarcely knowing what she did, she stumbled forward and pressed the unfamiliar button, the one that opened the door of her cell.”
Book:The Machine Stops