《旧唐书·列传·卷二十一》
《礼记》说： 处在上位的人容易侍奉，处在下位的人容易了解，那么刑罚就不会繁多。
《礼》云： 为上易事，为下易知，则刑不烦矣。
The Book of Rites says: People in high positions are easy to serve, and people in low positions are easy to understand, so there will not be many punishments.