《淮南子·泰族训》
聪明能干的人都在经营忙碌，种种事情纷纷涌现，而圣人只能拿仁义作唯一标准来衡量这些人和事，符合的叫做君子，不符合的称作小人。
知能蹐驰，百事并行，圣人一以仁义为之准绳，中之者谓之君子，弗中者谓之小人。
The clever and capable are all busy, and all kinds of things emerge in endlessly. However, the sage can only use benevolence and righteousness as the sole criterion for measuring these people and events. Those who conform to the requirements are called gentlemen, and those who do not conform to the requirements are called villains.