夜晚最黑暗时，星星最明亮。
In international trade, a country should specialize in the production of goods for which it has a comparative advantage, and trade with other nations to maximize overall economic welfare.
预测未来的最好方法就是创造未来。
The young do not know enough to be prudent, and therefore they attempt the impossible, and achieve it, generation after generation.
坚持做自己，因为没有人能代替你。
The purpose of education is to make up for the shortcomings in our instinctive ways of thinking.
I don't compete with anyone but myself.