Fauna of Mirrors by Jorge Luis Borges — Read

In one of the volumes of the Lettres édifiantes et curieuses that appeared in Paris during the first half of the eighteenth century, Father Fontecchio of the Society of Jesus planned a study of the superstitions and misinformation of the common people of Canton; in the preliminary outline he noted that the Fish was a shifting and shining creature that nobody had ever caught but that many said they had glimpsed in the depths of mirrors. Father Fontecchio died in 1736, and the work begun by his pen remained unfinished; some 150 years later Herbert Allen Giles took up the interrupted task. According to Giles, belief in the Fish is part of a larger myth that goes back to the legendary times of the Yellow Emperor.

In those days the world of mirrors and the world of men were not, as they are now, cut off from each other. They were, besides, quite different; neither beings nor colours nor shapes were the same. Both kingdoms, the specular and the human, lived in harmony; you could come and go through mirrors. One night the mirror people invaded the earth. Their power was great, but at the end of bloody warfare the magic arts of the Yellow Emperor prevailed. He repulsed the invaders, imprisoned them in their mirrors, and forced on them the task of repeating, as though in a kind of dream, all the actions of men. He stripped them of their power and of their forms and reduced them to mere slavish reflections. Nonetheless, a day will come when the magic spell will be shaken off.