《三国志·蜀书·许麋孙简伊秦传》
等到刘备登基，就册封许靖说： 朕得以承继大统，君临四方，但日夜忧心忡忡，担心国家不能平定，百姓不能亲附，五德不彰，你作为司徒应该谨慎地施行教化，使其发扬光大。
及即尊号，策靖曰： 朕获奉洪业，君临万国，夙宵惶惶，惧不能绥。百姓不亲，五品不逊，汝作司徒，其敬敷五教，在宽。
When Liu Bei ascended the throne, he enfeoffed Xu Jing and said: I have succeeded to the great line and ruled the four directions, but I am worried day and night, fearing that the country cannot be pacified, the people cannot be attached, and the five virtues will not be manifested. As the Minister of Education, you should carry out the teachings cautiously and carry them forward.