《汉书·志·地理志下》
这是说圣王在上位，统一管理人间伦理，一定要改变他们的根本，转变他们的末节，这是把天下混同为一，加以中和，然后君王的教化就形成了。
言圣王在上，统理人伦，必移其木，而易其末，此混同天下一之乎中和，然后王教成也。
This means that the sage-emperors, who have obtained the position of ruler and are managing human affairs, must change the roots and transform the sprouts of the people, making the empire one and bringing about an equalization, and then the kingly teachings are complete.