《资治通鉴·唐纪·唐纪十四》
高丽有一位官居对卢的人，年老熟悉吏事，对高延寿说： 秦王李世民对内铲平各路豪杰，对外使四方臣服，以己之力，自玄为帝，此乃天降命世之人，如今倾唐朝军队前来攻打我们，万万不可对抗呀。
高丽有对卢，年老习事，谓延寿曰： 秦王内芟群雄，外服戎狄，独立为帝，此命世之材，今举海内之众而来，不可敌也。
There was a Koguryo official named Dui Lu, who was old and familiar with official matters. He said to Gao Yanshou: “Qin King Li Shimin pacified all the heroes internally and subjugated all directions externally and became Emperor with his own strength, he is a person bestowed by heaven, now he leads Tang to attack us, we must not fight them.”