你不必被过去做过或没做过的事情定义。

If you're trying to achieve, there will be roadblocks. I've had them; everybody has had them. But obstacles don't have to stop you. If you run into a wall, don't turn around and give up. Figure out how to climb it, go through it, or work around it.

理解布莱克-斯科尔斯模型的关键在于认识到它是基于风险中性世界的概念，在这个世界中投资者对风险漠不关心。

单一货币的最大优势在于消除了汇率波动并降低了交易成本，从而促进了贸易和投资。