PAC学习框架提供了一种形式化的方法来量化概念类的可学习性。

文化进化不是线性进展，而是适应和变化的复杂网络。

The best way to understand markets is to see them as dynamic systems.

只要你曾经在一只天鹅蛋里待过，就算你是生在养鸭场里也没有什么关系。

Efficient market theory is correct in that there are no gross inefficiencies， but we look at anomalies that may be small in size and brief in time.

I love to dance. I love to move. I love to perform. I love to entertain.

Don't interfere with anything in the Constitution. That must be maintained, for it is the only safeguard of our liberties. And not to Democrats alone do I make this appeal, but to all who love these great and true principles.

唯一能让你成为赢家的是你的韧性。