The improvement of the productive powers of labor, and the greater part of the skill, dexterity, and judgement with which it is anywhere directed or applied, seem to have been the effects of division of labor.

简短的词是最好的,又短又古老的词最最好。

工作中的快乐秘诀在于一个词——卓越。知道如何做好某件事就是享受它。