《韩非子·难二》
伊尹自己去做厨师向商汤献策求得任用，百里奚自己去做俘虏向秦穆公献策求得任用。
伊尹自以为宰干汤，百里奚自以为虏干穆公。
Yi Yin made himself a cook to offer advice to Shang Tang and get a job, and百里奚 made himself a prisoner to offer advice to Duke Mu of Qin and get a job.