《韩非子·有度》
齐桓公吞并了三十个国家，开辟了三千里疆土；齐桓公死后，齐国因此衰弱。
齐桓公并国三十，启地三千里；桓公之氓社稷也，而齐以亡。
Duke Huan of Qi at one time annexed thirty states, extending his territory over three thousand li; after the death of Duke Huan of Qi, the state of Qi was weakened.