"A book is a dream that you hold in your hand."
书是你握在手中的一个梦。
You can't be afraid to fail. It's the only way you succeed.
大海是一个充满无限可能的地方，一个想象力可以自由漫游的地方。
A mathematician is a device for turning coffee into theorems.
The beauty of instrumental variables is that they allow us to see the world in a new light.