"There are moments when the past feels so close you could reach out and touch it, and then it’s gone again, like smoke."

分子的语言是通用的，而我们才刚刚学会说它。

选择朋友要慢，改换朋友要更慢。

A mathematician is a device for turning coffee into theorems.

外交不是零和游戏，而是寻找共同利益的艺术。