理解布莱克-斯科尔斯模型的关键在于认识到它是基于对冲以消除风险的理念。

The artist must be a witness to the eternal.

Let us unite our wills and form but one soul， one life， one being， in order that we may truly have common property.

The hardest person to forgive is always yourself.

成功不是终点，失败也非致命，重要的是继续前进的勇气。

I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.

凡是大国之所以不攻打小国的，必定是由于这个小国粮食充足，城郭修筑坚固，上下和谐一心。