理解布莱克-斯科尔斯模型的关键在于认识到它是基于对冲以消除风险的理念。
Poetry should surprise by a fine excess and not by singularity—it should strike the reader as a wording of his own highest thoughts, and appear almost a remembrance.
译文:定要积德,一定要对人和气慈悲,一定要替人包含一切,而且要爱惜自己的精神。
每一个挑战都是伪装的机遇——只要你有心去寻找。
人们常只想到自己的需要,而没考虑自己的能力。
我不能没有书。