《旧唐书·列传·卷六十八》
性格险恶，挟制左道，结交权贵，以求蒙受恩宠，代宗被他完全迷惑。
性险，挟左道，结中贵，以希主恩，代宗甚惑之。
Ruthless in character, he associated with the heterodox, made friends with the powerful and the noble, with the aim of being favoured and gaining special treatment. Emperor Daizong was thoroughly deceived by him.