"Realism is not about copying nature, but understanding its essence."
现实主义不是复制自然,而是理解其本质。
"The serve is the most important shot in tennis."
我不害怕跌倒,因为我知道我会重新站起来。
我的语言的界限意味着我的世界的界限。
The beauty of instrumental variables is that they allow us to see the world in a new light.