What did Rousseau mean by "the noble savage?"

I have moved
this question to this group because it is in the Discourse that Rousseau
truly addresses the idea of the noble savage.

To Rousseau, human nature is
basically good.  Rousseau believed that it was not people's evil nature that causes problems in
the world.  Instead, he believed that people started to have more problems as they moved away
from the state of nature.

In the state of nature, Rousseau argued, people
were noble savages.  They were primitive and did not think much, but they were good and they
were happy.  People in that state, Rousseau says, are naturally inclined against making others
suffer.  They simply go along, living their own lives and not trying to hurt others.

It is only when people become "civilized" that problems start.  People start
to stake out property -- to differentiate between what is theirs (property, tribe, etc) and what
is not.  They then start to fight over these things and make elaborate socities based on having
more things than other people.

So, to Rousseau, the noble savage is the human
being in the state of nature.  It is a savage because it has no civilization and no philosophy. 
But it is noble because it lives a good life, not trying to hurt or exploit
others.