Sorry for the size of the text, but I think that reading can help reflect.

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LEARN TO WRITE IN THE SAND (Legend Eastern)
Two friends, Mussa and Nagib, extensive roads traveled by circulating the sad and gloomy mountains of Persia. Both were accompanied by their assistants, servants and caravan.
Arrived one morning, on the banks of a large river, muddy and impetuous, within which the death lurked the most daring and reckless.
It was necessary to overcome the current threatening. When jumping, but a stone, the young Mussa was unhappy. Distorting her foot, plunged into the maelstrom of the foaming waters in revolt. There would have perished, dragged into the abyss, if not Nagib.
This, without a moment's hesitation, threw himself into the stream, and fighting furiously, managed to bring the saved fellow traveler.
- What did Mussa?
Called at the same moment, his ablest servants and ordered them in the face smoother gravassem a great stone, which stood near this admirable caption:
"Wayfarer, on this place during a journey, Nagib saved heroically Mussa your friend."
This done, they proceeded with their caravans, by ceaseless path of Allah.
Some months later, return to land again were forced to cross the same river, on the spot dangerous and tragic.
And, as if they feel tired, they decided to rest a few hours to the welcome shade of the flagstones which boasted high up in the honorable description.
Seated, because in light sand, began to talk.
Behold, for a reason futile arises suddenly serious quarrel between the two companions. Disagreed. Discussed. Nagib, exalted, in a burst of anger, slapped brutally friend. Mussa did? What would you do in her place? Mussa did not retaliate the offense. He got up and, taking, quiet, his staff, wrote in the sand clear, at the foot of the black rock:
"Wayfarer, on this place during a journey, Nagib, for futile reasons, swore, seriously, your friend Mussa."
Surprised at the strange conduct, one of the helpers respectful Mussa noted:
- Lord! The first time, to exalt the selflessness of Nagib, didst send burn forever in stone, heroic. And now, he just offend you so badly, you you limit yourselves to write in the sand uncertain, the act of cowardice! The first legend, O sheik, will remain forever.
All that transit through this site it will be news. This other, however, crossed out on the carpet of sand, before nightfall, will be gone, like a trace of foam between the boisterous waves of the sea.
Mussa said:
Is the benefit I received from Nagib remain forever in my heart. But the injury. . . this black offense ... write it in the sand, with a vote, so that if away quickly fade and disappear quickly also disappear and go out of my memory!
- So it is, my friend! Learn to write in stone, the favors that you receive the benefits you do, words of affection, sympathy and encouragement that you hear.
Learns, however, writing in the sand, the injuries, the ingratitude, perfidy and the ironies that I injured by rough road of life.
Learn to write well, in stone; learn to write, so the sand ... and you will be happy!
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