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。
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.
The unknown is not to be feared but to be explored.
君子吃饭无求过饱,……做事要勤奋,说话要谨慎,并能接近有道理的人,向他学习,以纠正自己的缺点,这就可以说是好学的人了。