Another low-information commenter.

"Berkshire Hathaway CEO Warren Buffett is no stranger to philanthropy, having created the Giving Pledge with Bill and Melinda Gates and pledging more than 99% of his own wealth to charitable causes during his lifetime or upon his death. He's already given away $21.5 billion, according to Wealth-X."
http://www.businessinsider.com/billionaires-giving-away-their-money-2015-10/#sara-blakely-has-made-it-her-lifes-work-to-help-women-3