《资治通鉴·唐纪·唐纪三》
曹珍说： 隋朝失去天下，天下人共争君位，称王称帝的，岂只一人！
曹珍曰： 隋失其鹿，天下共逐之，称王称帝者，奚啻一人！
Cao Zhen said: "The Sui Dynasty lost天下, and the people of the world fought for the throne together, claiming to be kings and emperors, and there is more than one person!"