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。

To be the best, you must be able to handle the worst.

The choices we make each day—what we buy, what we eat, how we live—all have an impact.

All complex behavior can be reduced to simpler stimulus-response units.

在科学中，就像在生活中一样，重要的事情很少是简单或显而易见的。