光是让建筑鲜活的东西。
The true teacher defends his pupils against his own personal influence. He inspires self-trust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.
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。
问题是,我们是否乐于假设我们的孙子孙女可能永远无法在大象的图片书之外看到大象?
"The truth is that literature is the only way to overcome death."