仰不愧于天,俯不怍于人。
人活着,就应该坦坦荡荡,明明白白,无所愧疚。
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。
世界就是所有实际情况。
We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.