《周书·列传·卷四十六》
孝起始就是事奉亲人，而后以此使天下得以治理；义在于人际间相互亲密讲求合适相宜，是人依靠这来成全仁德的。
夫塞天地而横四海者，其唯孝乎；奉大功而立显名者，其唯义乎。
Filial piety begins with serving one's parents, and then it extends to make the world well-ordered; righteousness is to be intimate and harmonious with each other in human relations. People rely on this to fulfill benevolence.