A little boy had bad character. His father gave him a package of nails and says to him that each time that it would be put in anger, it should plant a nail in the fence.

The first day, the little boy had planted 37 of them. And that decreased gradually. He discovered that it was easier to be put in anger than to plant nails in the fence.

Finally, comes the day when the little boy did not put himself any more in anger. He informed of it his father who asked him to tear off a nail for each day when he had put himself in anger.

The days passed and finally the young boy was capable statement with his father that all the nails were torn off. The father took his son by the hand and led it to the fence.

«Perfect, my son, but looks at the holes which the nails left in the fence. This fence will be never again the same one. When you say words under the blow of anger, they leave scars, just like here. You can stab somebody and then to withdraw your knife. It does not matter the number of times that you will say: I regret it, the wound will remain always there. A verbal wound is not less serious than a physical wound».