要改变一个人，必须改变他对自己的认知。
What is necessary to change a person is to change his awareness of himself.
Competition regulates the rate of profit, and profit regulates the rate of accumulation.
创新不仅仅是创造新事物；它是为了改变人们的生活。
The time to start picking your family is now.
I don't think you can make a good movie without loving the medium.
The beauty of instrumental variables is that they allow us to see the world in a new light.
计算复杂性的美在于它能够揭示问题的固有难度，而不管用于解决这些问题的具体算法是什么。