每个人都有不为世人所知的秘密悲伤；我们常常称一个人冷漠，其实他只是悲伤。
"Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad."
我们正在进入一个量子现象将成为工程工具的时代。
The most advanced machinery means nothing without skilled hands to guide it.
"The beauty of literature is that it allows us to live a thousand lives in one."
数学家是能在定理之间找到类比的人；更好的数学家是能在证明之间看到类比的人；而最好的数学家是能注意到理论之间类比的人。
There is danger from all men. The only maxim of a free government ought to be to trust no man living with power to endanger the public liberty.
The study of economic history is not just about the past; it’s about understanding the roots of present inequalities.
