The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
"Biography is the most intimate form of history."
教育就是当一个人把在学校所学全部忘光之后剩下的东西。
Success is not about the amount of money you make, it's about the difference you make in people's lives.
——二个叔父孙学成、孙观成早年均因为贫穷必须远赴他乡做工谋生，在孙出生前后因病去世，孙看到清朝绩弱不振，受到外国强敌欺侮，增加自己从事反清革命的动机
