每个圣人都有过去，每个罪人都有未来。
It is dangerous to be right in matters where established men are wrong.
The challenge in auction theory is to balance simplicity with strategic sophistication.
数字工具可以普及心理健康服务，但前提是我们必须将公平性和可及性置于设计核心。
The computer is a medium of expression, like a piano is a medium of expression.
"It is worth living for, to find out what is true."
Trade between two countries can be mutually beneficial, even if one of them is less efficient in the production of all commodities.
