This quick TED talk entry is courtesy of TED.com. What is jealousy? What drives it, and why do we secretly love it? No study has ever been able to capture its “loneliness, longevity, grim thrill” — that is, says Parul Sehgal, except for fiction. In an eloquent meditation she scours pages from literature to show how jealousy is not so different from a quest for knowledge.