《汉书·志·艺文志》
《春秋》所贬损的当代君臣，有权威势力，他们的事情就写进了解释中，因此这本书就被隐藏起来了，没有宣扬，用来避免遭到当时的灾难。
《春秋》所贬损大人当世君臣，有威权势力，其事实皆形于传，是以隐其书而不宣，所以免时难也。
The contemporary monarchs and ministers belittled by the Spring and Autumn Annals had authority and power, and their deeds were written into the explanation, so the book was hidden and not publicized to avoid the disaster at that time.