《资治通鉴·唐纪·唐纪四十九》
德宗喜欢斯文儒雅，不露锋芒，但柳浑朴实而正直，轻率而简易，不讲究庄严的举止，在德宗面前时常还说方言俗语，德宗心中不快，打算将他贬黜为王府长史。
上好文雅缊藉，而浑质直轻侻，无威仪，于上前时发俚语。
Dezong liked refined and elegant people who did not act rashly or violently, but Liu Hun was honest and upright, easygoing and simple, and did not pay attention to decorum. When he was in Dezong's presence, he often said common phrases or used local expressions, which made Dezong unhappy and caused him to consider demoting Liu Hun and reassigning him as the Prefect of the Palace.