It is really quite a profound picture. All the possible interpretations of why the person is hunched over with their head in their hands. Revelation, sadness, joy all seem possible. Some art seems to always evoke the same emotion in those that view it while this, I imagine, evokes the strongest emotion the viewer has at the time of seeing it. Regardless you then wonder why has no one around them noticed? Do they care? If the flame above their heads is enlightenment then does enlightenment come with a lack of empathy?
Sorry, I just really like this piece apparently.