我一直在想某处的一条河，水流湍急。水里有两个人，拼命想抓住对方，竭尽全力地抓着，但最终还是不行。水流太急了。他们不得不放手，各自漂走。
I keep thinking about this river somewhere, with the water moving really fast. And these two people in the water, trying to hold onto each other, holding on as hard as they can, but in the end it’s just too much. The current’s too strong. They’ve got to let go, drift apart.
The human figure is the most important thing to me.
数学中最深刻的思想往往源于最简单的观察。
书是一个永远不会评判你的朋友。
可持续性不是终点，而是一段旅程。