《后汉书·列传·杨李翟应霍爰徐列传》
帝王图籍，陈列左右，心想亡国的原因，鉴观兴王得天下的原因，庶几灾害可以停止，丰年可以到来了。 
帝王图籍，陈列左右，心存亡国所以失之，鉴观兴王所以得之，庶灾害可息，丰年可招矣。
The imperial chart collection is displayed on the left and right, thinking about the reasons for the loss of the country, and reflecting on the reasons for the rise of the king, so that disasters can be stopped and a good year can come.