"Causal inference requires careful thought about the assumptions underlying your analysis."
一本书是作者与读者之间无限的对话。
Memory is a strange thing, it doesn't work like I thought it did. Memory is not a simple thing at all.
艺术不是你看到的,而是你让别人看到的。
Everything we do here is important.
我不是一个有耐心的人。我希望事情现在就完成。