Our work begins with Bill and Melinda Gates’ belief that all lives
have equal value. We think all people deserve the chance to have
healthy, productive lives. Our approach to giving is driven by the
foundation’s guiding principles.  

Bill and Melinda Gates and Warren Buffett set our overarching
grantmaking priorities—such as improving health and reducing extreme
poverty in the developing world and improving high school education in
the United States. They establish high-level goals for our grantmaking
programs. Then our three program teams devise a strategy for meeting
these goals. 

More information at: http://www.gatesfoundation.org/Pages/home.aspx