Good policy requires both sound theory and empirical validation.

跨学科合作是突破性发现的关键。

In the state of nature, indeed, all men are born equal, but they cannot continue in this equality. Society makes them lose it, and they recover it only by the protection of the laws.

名称没有本来就合适的，而是由人们共同约定来命名的，约定俗成就是合适的，与约定不同的就是不合适的。