《韩非子·外储说左上》载有关于《画鬼》的一则寓言,大意是说,有一位画师为齐王作画。齐王问他画什么最难,他说画犬马最难。齐王又问画什么最容易,他说画鬼魅最容易。画师并且进一步阐述其难易的理由道:“夫犬马人所知也,旦暮罄于前,不可类之,故难。鬼神无形者,不罄于前,故易之也。” Han Fei Tzu said that the left upper left contains a parable about “painting ghosts”, to the effect that one of the painters painted King Qi. Qi asked him what the hardest painting, he said the most difficult to draw the dog. Qi Wang asked what is the easiest painting, he said the most easy to paint ghosts. Painter and further elaborated on its difficult reasons: “The dogma know, once the twilight in front, can not be the class, so difficult. Ghosts and invisible, not exhausted in front, it is easy.”