理解布莱克-斯科尔斯模型的关键在于认识到它是基于创建无风险对冲的理念。
Decision making is the heart of administration, and the heart of decision making is art rather than science.
The future belongs to those who prepare for it today.
释义:面对不公的现实,我们仍需坚持做好人的选择。