Every morning upon waking, strive to be wiser than you were the day before.
每天起床的时候,争取变得比你昨天更聪明一点。
The historian’s first duty is to the truth.
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。