In the end, we will remember not the words of our enemies, but the silence of our friends.
最终，我们记住的不是敌人的话语，而是朋友的沉默。
It's not the writer's job to tell you how to feel. It's the writer's job to tell you something and make you feel it.
布莱克-斯科尔斯公式的美妙之处在于它仅依赖于一个不可观测的参数，即股票的波动率。
数学是给不同事物以相同名称的艺术。