"Whether or not beautiful is good, beauty seems to bring out goodness in others.  In one psychologist's study, seventy-five college men were shown photographs of women, some of whom were very attractive and others less so.  They were asked to select the person they would be most likely do the following for: help her move furniture, loan money, donate blood, donate a kidney, swim one mile to rescue her, save her from a burning building, and even jump on a terrorist hand grenade.  The men were most likely to volunteer for any of these altruistic and risky acts for a beautiful woman.  The only thing they seemed reluctant to do for her was loan her money."

from Survival of the Prettiest by Nancy Etcoff