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。
You can't let praise or criticism get to you. It's a weakness to get caught up in either one.
过去是我们对自己讲述的关于自己的故事。