Bill Gates away half of its value, as detailed in "The Power of Half". Gates and his wife invited Joan Salwen to Seattle to speak about what the family had done, and on December 9, 2010, Bill and Melinda Gates, and investor Warren Buffett signed a commitment they called the "Giving Pledge." The pledge is a commitment by all three to donate at least half of their wealth over the course of time to charity. Gates has also provided personal donations to educational institutions. In 1999, Gates donated $20 million to the Massachusetts Institute of Technology (MIT) for the construction of a
Bill Gates Sr. (b. 1929), whom he met at UW, and they remained married until she died in 1994. They had three children: Kristianne, Bill, and Libby. In 1996 Gates married Mimi Gardner Gates (b.1943), who was the director of the Seattle Art Museum. William H. Gates Sr. serves as an Honorary Co-Chair for the World Justice Project. The World Justice Project works to lead a global, multidisciplinary effort to strengthen the Rule of Law for the development of communities of opportunity and equity . Bill Gates Sr. William Henry Gates II (born November 30, 1925), better known as Bill Gates Sr., is