Bhagavad Gita Chapter 18. Conclusion--The Perfection of Renunciation http://www.asitis.com/18/51-53.html
Being purified by his intelligence and controlling the mind with determination, giving up the objects of sense gratification, being freed from attachment and hatred, one who lives in a secluded place, who eats little and who controls the body and the tongue, and is always in trance and is detached, who is without false ego, false strength, false pride, lust, anger, and who does not accept material things, such a person is certainly elevated to the position of self-realization.
Interesting blog of a nudist in Tonga:
http://sonia-belle.blogspot.com/
