The only way to save a rhinoceros is to save the environment in which it lives, because there's a mutual dependency between it and millions of other species of both animals and plants.

The general will is always right， but the judgment which guides it is not always enlightened.

布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为估计几个关键参数，尤其是波动率。

The only way to do great work is to love what you do.

最好的书是让你改变的书。