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The only thing that you absolutely have to know is the location of the library.

"With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one—but no one at all—can tell you what to read and when and how."

正所謂“物以類聚，人以群分”，自己處在什么樣的圈子里，自己一定有這個圈子的特點。自身的榮辱禍福都是由自己的行為決定的。比如，兩堆柴火堆放的樣子差不多，但是火星總是容易在干的那一堆里著起火。很多時候我們抱怨別人和不順心的事，然而往往是自身的問題。

I like to be different and stand out.

因果推斷不僅僅是統計顯著性；它關乎理解數字背后的機制。