《论衡·卷二十三·四讳篇》
尊长者少而晚辈多，尊长者不能有两个，晚辈可以有很多。
主少而助多，尊无二上，卑有百下也。
The elder and the senior are few while the younger and the children are many. The elder and the senior cannot have two, while the younger and the children can have many.