Adjective. Morally excellent; virtuous; righteous.
Noun. A member of a people regarded as primitive and uncivilized.
Le bon sauvage is a literary character who embodies the concept of the wild human. An "other" who has not been corrupted by civilization, and therefore symbolizes humanity's innate goodness.
Talking from a first-world perspective, I believe we are often alienated from the world we live in. A lot of todays problems seem to be symptoms of a lost connection with the "real" world and our food-chain. Instead of having a sharing and careful relationship with ourselves and the world, we lose ourselves in a short term focus on acquiring security for the micro-communities with which we identify. Trying to go back to a utopian situation can be no solution, but re-connecting with (our) nature might give some ideas on how to make this world a better place. Hence the image of le bon sauvage, someone who is "bon", implying values and norms and thus community, but also "sauvage" and in contact with nature.
During these past years I have been drawn to nature, feeling there are answers waiting to be discovered when spending time out there, alone (though not really) or with friends. I am more than happy to share these experiences with you, hoping this might give inspiration to go out and explore.