"In observational studies, we often have to rely on assumptions that are not directly testable."

I'm not a fashionista, I'm a fashion.

预测未来的最好方式就是创造未来。

Envy is the ulcer of the soul.

The best way to predict the future is to invent it.

黄莺和鲜花尚且担心春光流逝，怎么可以白白虚度大好时光？

"We are all exiles from our childhoods."

In science, the most exciting phrase is not 'Eureka!' but 'That's funny...'

投资于农民教育就是投资于乳制品的未来。