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几个可观察的变量。
我是自由的,那就是我迷失的原因。
The best way to predict the future is to create it.
In the end, survival is not about how much you have, but how well you can use what you have.
每个故事都是一次旅程,每次旅程都是一个故事。
He was a man who had always been too proud to ask for help, and now he was too proud to accept it.