Tras una suerte de vicisitudes y aventuras, el joven Siyu comprende que lo que parecia buena suerte quiza era mala suerte, y lo que parecia mala suerte acaso no lo era. El cuento del caballo perdido del anciano sabio es una fabula que nos ensena que todo es relativo y que las cosas son «segun el color del cristal con que se miran». Lo que aparentemente se presenta como una desgracia puede ser una gran suerte, y viceversa. Enraizado en la tradicion taoista, este breve y delicioso cuento es tan actual hoy dia como hace 3000 anos. / After a lot of hardships and adventures, the young Siyu realizes that what seemed good luck was perhaps bad luck and what seemed bad luck perhaps was not. The story of the lost horse of the wise old man is a fable that teaches us that everything is relative and that things are of the colour of the glass we look through. What appears to be a big misfortune may finally be a lucky event, and vice versa. Rooted in the Taoist tradition, this short story is today as delightful and up-to-date as 3000 years ago.