Always be learning. The market is constantly changing, and you need to keep up with it.

The individual has always had to struggle to keep from being overwhelmed by the tribe.

唯一交到朋友的方法就是自己先成为朋友。

数学是人类精神最美丽、最强大的创造。

勇气不是没有恐惧，而是战胜恐惧。