《汉书·传·杜周传》
到杜钦浮沉当世，好谋划而成功，在建始之初深刻陈述女戒，事实终于证实了他的话，《关雎》差不多是微妙的，不是那种浮夸华丽杂而不专之徒所能窥视到的。
及钦浮沉当世，好谋而成，以建始之初深陈女戒，终如其言，庶几乎《关雎》之见微，非夫浮华博习之徒所能规也。
When Du Qin was living in obscurity, he planned well and succeeded, and at the beginning of Emperor Jian Shi's reign, he made a penetrating exposition of the "Instructions for Women", and in the end, the facts proved his words to be true. "Guanju" is more or less subtle, and is not something that can be seen through by someone who is flashy, showy, and lacking in focus.