" How … ?” she began, and she stopped. She was too tired. She hoped that she wouldn’t have to say the rest of the sentence, that Billy would finish it for her. But Billy had no idea what was on her mind. “How what, Mother?” he prompted. She swallowed hard, shed some tears. Then she gathered energy from all over her ruined body, even from her toes and fingertips. At last she had accumulated enough to whisper this complete sentence: “How did I get so old? "

― Kurt Vonnegut Jr. , Slaughterhouse-Five