《淮南子·兵略训》
楚国的强大，如果丈量土地、计算人口的话，可算占天下的一半。然而楚怀王北面畏惧齐国的孟尝君，又背弃社稷而将自身委于强悍的秦国，结果兵败地削，自己到死都不能回到自己的国家。
楚国之强，大地计众，中分天下，然怀王北畏孟尝君，背社稷之守而委身强秦，兵挫地削，身死不还。
If Chu State's strength is measured by land and population, it can be considered half of the world. However, King Huai of Chu feared King Mengchang of Qi to the north, and turned his back on the state and handed himself over to the powerful State of Qin. As a result, he was defeated and his land was lost, and he could not return to his own country until he died.