《资治通鉴·后唐纪·后唐纪一》
后唐帝打算留下高季兴，郭崇韬劝后唐帝说： 陛下刚刚取得天下，诸侯们都不过是派子弟或将佐们来朝入贡，只有高季兴亲自来朝，应当表扬奖励他，以此来劝那些不亲自来的诸侯。如把他扣留下来不让他回去，这样背信弃义，让天下灰心失望，这不是长远之计。 
帝欲留季兴，郭崇韬谏曰： 陛下新得天下，诸侯不过遣子弟将佐入贡，惟高季兴身自入朝，当褒赏以劝来者；乃羁留不遣，弃信亏义，沮四海之心，非计也。 乃遣之。
The emperor of the Later Tang Dynasty planned to keep Gao Jixing, and Guo Chongtao advised the emperor of the Later Tang Dynasty, saying: Your Majesty has just won the world, and the princes are just sending their sons or generals to pay tribute and pay tribute. Only Gao Jixing came to pay tribute in person. He should be commended and rewarded for this, so as to persuade those princes who did not come in person. If you detain him and not let him go back, it will be a betrayal of trust and righteousness, and the world will be discouraged and disappointed. This is not a long-term plan.