《后汉书·列传·虞傅盖臧列传》
傅燮平常最恶宦官，临行，上疏说： 我听说国家的祸害，不在外部，都发生在内部。
燮素疾中官，既行，因上疏曰：臣闻天下之祸，不由于外，皆兴于内。
Fu Xie usually detested eunuchs, and before leaving, he submitted a memorial, saying: "I have heard that the nation's misfortunes do not lie outside, but all occur within."