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。

To live is the rarest thing in the world. Most people exist, that is all.

We try to buy stocks selling at a discount from their asset value.

艺术是探索未知的一种方式。

The fact that there is nothing permanent except change is a permanent theme in nature.

It's not worth doing something unless someone, somewhere, would much rather you weren't doing it.

The artist is the confidant of nature, flowers carry on dialogues with him through the graceful bending of their stems and the harmoniously tinted nuances of their blossoms.