G de Purucker's expounds on the theosophical notion of humans who have, over many lives, become Masters of their lower nature. They now radiate from their True Nature. Some are in bodies of flesh, some in subtle bodies. All are bodhisattvas - enlightened beings who live to help other beings advance spiritually.
http://www.theosophy-nw.org/theosnw/...gdp.htm#reader