《资治通鉴·晋纪·晋纪二十六》
前秦王苻坚说： 灾害降自上天，不是人力所能消除的，这是由于朕的政治混乱所致，刘兰何罪之有！ 
秦王坚曰： 灾降自天，非人力所能除，此由朕之失政，兰何罪乎？ 
King Fu Jian of Former Qin said: Calamity comes from the heavens, it's not something that humans can eliminate. It's because of my chaotic politics. How is Liu Lan at fault?