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。

I think the most important thing for a filmmaker is to have a vision and to be able to communicate that vision to others.

True leadership is about inspiring others to achieve more than they thought possible.

领导力在于今天做出艰难的决定，为更美好的明天铺平道路。