《新唐书·列传·卷二十二》
大军返还后，太宗神情怅然地说： 魏徵如健在的话，我能有这次行动吗？ 
军还，怅然曰： 魏徵若在，吾有此行邪！ 
After the army returned, Taizong said with a triste expression: "If Wei Zheng were still alive, would I have been able to carry out this campaign?"