《资治通鉴·唐纪·唐纪六十一》
陈后主、隋炀帝都擅长作诗，却不免亡国。对于他们，陛下有什么值得效法的呢！ 
陈后主、隋炀帝皆工于诗，不免亡国，陛下何取焉！ 
Both Emperor Chen Houzhu and Emperor Yang of Sui were good at writing poems, but they could not avoid the tragedy of national ruin. What is there for Your Majesty to learn from them!