《旧唐书·列传·卷一百一十五》
李佑私下对人说： 我黑夜翻越蔡州城擒吴元济，未曾心跳，今日被温御史吓破了胆。哎，可畏呀！ 
祐私谓人曰： 吾夜逾蔡州城擒吴元济，未尝心动，今日胆落于温御史。吁，可畏哉！ 
Li You said privately to someone: "When I climbed over the walls of Caizhou at night and captured Wu Yuanji, my heart did not beat; today it was broken by Imperial Censor Wen. Ah, truly terrifying!"