《吕氏春秋·览·审分览》
管子是臣子，他不担当自己不能做的事情，而让五个人把自己的才能都献出来，更何况君主呢？
管子，人臣也，不任己之不能，而以尽五子之能，况於人主乎？
Guan Zhong, as a minister, avoided taking on himself anything that he was incapable of doing, and made use of all the capacity of these five. How much more should a ruler do this?