#1 Microsoft founder Bill Gates

Bill gates has regained his title as “richest person on earth” this year.  But he and his wife Melinda aren't interested in keeping their wealth for themselves, or for their three children. "I knew I didn't think it was a good idea to give the money to my kids. That wouldn't be good either for my kids or society," he told The Sun in 2010. Instead, the Bill & Melinda Gates Foundation was founded in 1994, and today has assets of over $37 billion dollars. The Foundation even started "The Giving Pledge," which invites other wealthy individuals to join the Gates' lead and donate half their money to charity.

#2 Business magnate Warren Buffett

The third richest person on the planet, Buffett has pledged to give away 99 percent of his wealth, either during his life or when he dies. He started by promising 83 percent of it to the Gates Foundation, according to FORTUNE Magazine.

Echoing a common sentiment on this list, Buffett said in his letter to the Gates Foundation: "I want to give my kids just enough so that they would feel that they could do anything, but not so much that they would feel like doing nothing."

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