经济研究应旨在为现实世界的决策提供信息。

We don't inherit the oceans from our ancestors; we borrow them from our children.

Sometimes you may feel like you’re not good enough, but you have to remember that you are a child of God and that you are loved.

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。