Greg Mortenson is a humanitarian and founder of the Central Asia Institute nonprofit organization. Through his work with CAI over the past 16 years, Mortenson has established over 130 schools in remote parts of Pakistan and Afghanistan to promote peace through education. The document discusses how Mortenson was inspired to start building schools after promising a village he met in Pakistan that he would build a school, as he noticed students writing in the dirt outside. However, Mortenson and CAI have also faced criticism over his management style and financial practices at the organization.