The past is a foreign country; they do things differently there.

我从不回头，永远向前看。

There is no creature on earth half so terrifying as a truly just man.

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.

金融模型的真正考验不在于它有多复杂，而在于它是否能很好地捕捉经济问题的本质特征。