《贞观政要·卷六·论奢纵》
可是从魏晋以来，到周、隋之时，朝代长的不过五六十年，短的只有二三十年就烟消云散了。
自魏、晋以还，降及周、隋，多者不过五六十年，少者才二三十年而亡。
However, from the Wei and Jin dynasties to the Zhou and Sui dynasties, dynasties that lasted longer than 50 or 60 years and shorter than 20 or 30 years soon disappeared.