FAMOUS QUOTES

Quote # 1:

Education is the most powerful weapon which you can use to change the world.
Nelson Mandela

I think that the education is very powerful, but also it is important that the great countries help in this situation.
The most important change that it must do the world at this moment is to help to stop the global warming, and the majority of the great countries does not collaborate in this goal.
The world has the knowledge and the education of what it is the global warming and of how to stop it, but the world does not do the sufficient thing to stop it.

Quote # 2:

We have learned to fly the air like birds and swim the sea like fish, but we have not yet learned the simple art of living together as brothers.
Martin Luther King, Jr.

Related to previous famous quote, the world never is going to change positively if we do not learn to live together as brothers. 
We have learned infinity of things, we have invented countless of things, we have high technology, but we continue without understanding that we are in the same planet and we must learn to live as brothers.

 Quote # 3:

It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt. Abraham Lincoln

About this quote, I can say that it is better to remain quiet than to say something that will make us seem as idiots.
We must think what we are going to say, but if we are going to say something useless, it is better to be quiet.