生命、自由和共同礼仪的最坏敌人是完全的无政府状态；它们的第二坏敌人是完全的权力。
The worst enemy of life, freedom and the common decencies is total anarchy; their second worst enemy is total power.
通往伟大歌剧的荣耀之路没有捷径。
To be alive is to be in a state of constant becoming.
——《致郑藻如书》（1890年）
理解布莱克-斯科尔斯模型的关键在于认识到它是基于创建无风险对冲的理念。
Gather ye rosebuds while ye may. Old Time is still a-flying. And this same flower that smiles today, tomorrow will be dying.
To live is the rarest thing in the world. Most people exist, that is all.
抽象的力量在于它允许我们忽略不相关的细节，专注于问题的本质方面。