《资治通鉴·唐纪·唐纪五十五》
李吉甫向宪宗进言说： 淮西与河北不同，四周是没有同伙援助的。国家经常屯驻数十万兵马，以便防备淮西，将士的劳苦与国家的开支都是难以支撑下去的。
李吉甫言于上曰： 淮西非如河北，四无党援，国家常宿数十万兵以备之，劳费不可支也。
Li Jifu said to Emperor Xianzong: "Huaipei is not like Hebei, since it doesn't have any associates outside it giving assistance. The state has often garrisoned several hundred thousand troops in order to guard against Huaipei, and the hardships of warriors and the state's expenses are both difficult to sustain."