Trade between two countries can be mutually beneficial, even if one of them is less efficient in the production of all commodities.
过去总是紧张的，未来是完美的。
The danger of the past was that men became slaves. The danger of the future is that men may become robots.
The world is a stage, and we are all merely players.
The returns to education are higher than most people realize.
The most important single aspect of software development is to be clear about what you are trying to build.
要真正理解一个问题，你必须首先将其简化为其核心本质。