爱迪生的童年生活非常困苦,常在火车上兜售糖果、点心和报纸。有一次,一个火车管理员粗暴地打了他一记耳朵。从此,他失聪了。但是,爱迪生对此并无痛苦之感,在他成为大发明家以后,他常说:“我真得感谢那位先生,在这个嘈杂的世界上,是他使我清静下来,不必堵着耳朵去搞实验了。”有一次,爱迪生在晚宴上碰见失明兼失聪的教育家海伦·凯勒。他跟海伦·凯勒说:“听不见声音是好事,起码不会有那么多噪音,思考会更清晰和集中。” Edison’s childhood is very difficult, often selling candy, snacks and newspapers on the train. Once, a train manager punctured him earnestly. Since then, he was deaf. However, Edison had no pain in this regard, and after he became a great inventor, he often said: “I really thank the gentleman, in this noisy world, he calm me down without having to plug his ears To experiment. ”“ Once, Edison met at the dinner Helen Keller, a blind and deaf educator. He told Helen Keller: ”It’s good to hear no sound, at least not so much noisy, and clearer and more focused.“ ”