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    Yes, the most expensive and valuable is not gold or silver, or even precious stones!


    - But what ?! If not wealth! He asked, Dara.


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    - Not really, knowledge! Surprised, noticed Dara.


    "But they cost nothing to us." For the same work that we do an engineer who receives $ 140 in the United States, he would receive $ 2,800 per month. And what''s the point? Noticed, sarcastically, Dara.


    Well, you''re exaggerating everything! Knowledge is needed, and it is expensive. But not all knowledge is special, knowledge!@@