Amazon CEO Jeff Bezos took on Twitter earlier in the week to comment on the news that MacKenzie Bezos promises to give away half of his fortune to charity.
"MacKenzie is going to be wonderful and thoughtful and efficient at philanthropy, and I'm proud of her," Bezos tweeted. "Her letter is so beautiful. Go to MacKenzie."
The Amazon founder and CEO also followed her letter where she announced her.
The author announced that she signed The Giving Pledge, a campaign created by billionaire Warren Buffett, Microsoft's co-founder Bill Gates and his wife Melinda Gates, to request the ultra-rich to lift the least half of their wealth for charitable causes.
MacKenzie didn't say how she planned to give her money away. She was one of the 1[ads1]9 new individuals and couples to enter into the obligation on Tuesday morning. The total number of givers in the philanthropy group has climbed to 204 since the billionaires started it back in 2010.
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The divorce of the Amazon CEO would go with her a 4 percent stake worth over $ 36 billion in online shopping giant.
The two announced that they were divorced after 25 years of marriage in January. They have four children together. In April, the duo announced that they had "completed the process of dissolving" their marriage.
Fox Business & # 39; Jennifer Earl and The Associated Press contributed to this report.