The Most Valuable One
A teacher gave to his student three similar dolls in the form of human and asked him: "Tell me which one is the most valuable one". The student was puzzled as these dolls were exactly the same in shape, size, colour, ... He couldn't find any distinction between any two of them. He confessed to his teacher "O teacher, they all look the same to me, I see no difference between them to indicate any superiority or inferiority". The master gave him a thin twig and ordered him to stick it in the ear hole of one the dolls. The student did so and it came out of the doll's other ear's hole. The master said "this is a man who forgets whatever he hears". Having said this, he ordered his student to put this doll aside and take another one and perform the same action. This time the twig came out of the doll's mouth. The master said: "This is a man who reveals to anyone whatever he hears". Then the student took the last doll and repeated the same process, the twig did not come out of anywhere at all. "This is a man" the master said "who keeps in his heart, whatever he hears. He is wise, he is the most valuable one."