The capacity of the human mind for formulating and solving complex problems is very small compared with the size of the problems whose solution is required for objectively rational behavior in the real world.

死亡并不存在，人们只有在被遗忘时才会死去；如果你能记住我，我将永远与你同在。

教师必须既是学生的研究者，也是学科的研究者。

Freedom is not a gift but an achievement that must be won every day.

The very least you can do in your life is to figure out what you hope for. And the most you can do is live inside that hope. Not admire it from a distance but live right in it, under its roof.

我不是坏人，我只是一个有时会做坏事的人。