《旧唐书·列传·卷二十二》
秦始皇平定六国，隋炀帝富达四海，骄奢淫逸，一个早上就灭亡了，我又怎么能够自骄呢？
秦始皇平六国，隋炀帝富四海，既骄且逸，一朝而败，吾亦何得自骄也。
The First Emperor of Qin unified the six states, and Emperor Yang of Sui was rich all over the world.  However, they were arrogant and extravagant and died in one morning.  So how could I be proud?