《资治通鉴·齐纪·齐纪六》
于是召见了于登，对他说： 朕将要广施教化于天下，因为你父亲有谦逊之美德、正直之品格，所以特晋升你为太子翊军校尉。 
乃引见登，谓曰： 朕将流化天下，以卿父有谦逊之美、直士之风，故进卿为太子翊军校尉。 
So he summoned Yu Deng and said to him, "I am going to spread education throughout the world, because your father has the good virtue of modesty and integrity, so I specially promote you to be the school lieutenant of the crown prince."