"To obtain immortality from such activities," said the Patriarch, "is also like scooping the moon from the water." "There you go again, Master!" cried Wukong. "What do you mean by scooping the moon from the water?" The Patriarch said, "When the moon is high in the sky, its reflection is in the water. Although it is visible therein, you cannot scoop it out or catch hold of it, for it is but an illusion."

• Journey to the West