[案例]卡耐基小时候非常淘气,是大家公认的坏男孩。九岁时,他的父亲迎娶了他的继母。第一次见面,他的父亲这样给继母介绍他:“亲爱的,希望你注意这个全郡最坏的男孩,他可让我头疼死了,说不定会在明天早晨以前就拿石头扔向你,或者做出别的什么坏事,总之让你防不胜防。” [Case] ​​Carnegie is very naughty childhood, is recognized as the bad boy. At the age of nine, his father married his stepmother. For the first time, his father introduced him to stepmother: “My dear, I hope you pay attention to the worst boy in the whole country. He may give me a headache and may throw stones before tomorrow morning. You, or what other bad things, in any case make you difficult to guard against. ”