I write to understand, to grasp the reality that escapes me.

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

Stories you read when you're the right age never quite leave you. You may forget who wrote them or what the story was called. Sometimes you'll forget precisely what happened, but if a story touches you it will stay with you, haunting the places in your mind that you rarely ever visit.

视角值80个智商点。

生命太短暂，不要在早晨醒来时带着遗憾。

The Greeks understood the mysterious power of the hidden side of things. They bequeathed to us one of the most beautiful words in our language—the word 'enthusiasm'—en theos—a god within.