工具变量的美妙之处在于它们让我们以新的视角看世界。
The beauty of instrumental variables is that they allow us to see the world in a new light.
孤独本质上是一种骄傲：你把自己埋在自己的气味中。
也许我就是美国的混蛋
Quality is the result of a carefully constructed cultural environment. It has to be the fabric of the organization, not part of the fabric.
If you think you saw a mouse， you did. And， if there is one， there are more.
没有什么比独立和自由更宝贵的了。