法律的概念涉及义务的初级规则与承认、变更和裁决的次级规则的结合。
The concept of law involves the union of primary rules of obligation with secondary rules of recognition, change, and adjudication.
The world is everything that is the case.
我们生活在一个人们有越来越多的时间，但彼此之间的时间却越来越少的时代。
A book is a dream that you hold in your hand.
Economic history teaches us that change is possible, but it is rarely easy.