"Taking a look back, one big reqret is, I left Harvard with no real awareness of the awful inequities in the world.  The appalling disparities of health and wealth and opportunity that condemned millions of people to the lives of despair.  I learned a lot here at Harvard about new ideas and economics, and politics.  I got great exposure to the advances being made in the sciences.  But humanities greatest advances are not in its discoveries, but in how those discoveries are applied to reduce inequity."