She's simply too strange. We can't relate to her, she speaks in a funny way, she comes from an odd place. So we can't relate to her, and when you can't relate to somebody, you don't envy them. The closer two people are -- in age, in background, in the process of identification -- the more there's a danger of envy, which is incidentally why none of you should ever go to a school reunion, because there is no stronger reference point than people one was at school with.

当一扇幸福的门关起的时候，另一扇幸福的门会因此开启，但我们却经常看这扇关闭的大门太久，而忘了注意到那扇已经为我们而开启的幸福之门。

The beauty of instrumental variables is that they allow us to see the world in a new light.

I don’t let fear define me, I let it refine me.

Thought is the servant of action, and action is the servant of survival.

The most dangerous art is the kind that makes you think.