《韩非子·八经》
一人专职，使亲近宠幸的臣子有事可干；反复强调，让出使远方的使者感到畏惧。
一用以务近习，重言以惧远使。
One person is in charge of one job, so that the favored minister with close ties has something to do; repeated emphasis makes the envoy sent to a distant place feel fear.