《旧唐书·列传·卷一百一十八》
当初韦温因杨、李与李德裕结怨，至杨、李居相位，韦温劝杨、李召用李德裕，以化解怨恨，二人不能听取，所以遭祸。
初温以杨、李与德裕交怨，及居位，温劝杨、李征用德裕，释憾解愠。二人不能用，故及祸。
At first, Wei Wen made enemies with Li Deyu because of Yang and Li, and even when Yang and Li became prime ministers, Wei Wen advised them to hire Li Deyu to resolve the grudge. The two would not listen, and hence suffered misfortune.