One often calms one's grief by recounting it.
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。
To understand is to know what causes what.
Don't be someone else's shadow; dare to be your authentic self.
我从未打算创造一个经典。我只是想讲一个故事。