The fact remains that getting people right is not what living is all about anyway.

And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.

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几个可观察的变量。