What does he mean?

As an assignment at school, I will be writing an expository essay on the following quote.  

"Impossible is a word only to be found in the dictionary of fools." (Napoleon Bonaparte)

     It is common to be constantly reminded to never give up. "Impossible is a word only to be found in the dictionary of fools." There Napoleon Bonaparte reminds you once more.The truth of this quote lies in the way you understand it.It means everything is possible and that people who give up are fools. The true meaning that Bonaparte seeks to impart to others will be revealed.

       It has once occured before to me. While I was at the park one day there was a large tree.Many teased and taunted that it must be impossible to climb to the top. Others laughed as I struggled and tried to reach for the next nearest branch. Their discouraging words flew right past me like I didn't hear a thing. Finally after much effort I had made it.This proves that the impossible can be conquered. Again Bonaparte's quote shows much meaning. 

   As an achiever Yu-Na Kim has tried so hard to win the Olympic gold medal. After much practice,competition,sweat and effort she gracefully enters the rink and performs the impossible in front of everyone leaving them expressionless. The competition was hard and nobody thought she had a chance against the others. Yet she was persistent and courageous and proved and achieved the so-called impossible. She now happily possess the gold medal that paid of for all hard work. In another situation,Bonaparte 's quote is displayed. 

         It is shown clearly that "Impossible is a word only to be found in the dictionary of fools."The act of simply giving up before anything can be done, is only an act that a fool would perform. It has been shown and proved every where;the persistence of the India Cricket team in the finals, The confidence in a young  reader's mind-just learning. It has been displayed everywhere. To me impossible means hard to achieve rather than not achievable. Napoleon Bonaparte has told us the constant valuable lesson- never give up.