I am not sure what you mean by there being darkness in light. Light destroys darkness. The two cannot remain together. What is possible is that darkness may cover itself in thick shields, not allowing light to penetrate inside. But in itself, light does not contain darkness except as a strange possibility; that is to say, if light goes out, there will be darkness.
Again, I am not sure what you mean by peripheries of Auroville. The peripheries are not part of Auroville. They are local people who do not necessarily want to be part of Auroville since it is an ideal that is too high for most people. They want to lead their life in their own way. But being in proximity to Auroville, they do have some kind of a symbiotic relationship. People come to Auroville from all over the world and it naturally benefits the local population. Besides, they are always free to enter Auroville like anyone else and vice versa. Both Auroville residents and the local population around come within the framework of Indian laws. As long as they comply with the law, there is no problem. Of course, every institution has its own ideal and framework necessary for its development. Auroville too has its rules applicable to all who wish to live and roam around there.
I am again not sure about only Sattwic people being allowed to live in the Ashram and Auroville. That would be absurd. It is a question of the inner call towards the Ideal. It is this call, this aspiration, to which the Divine answers. A sattwic man, too puffed up by his righteousness, may not be ready for the Divine. On the other hand, a common man may have a heart full of bhakti and true seeking. It is this that the Divine sees and not our outer nature’s appearances of good and bad.
Affectionately,
Alok Da
