In 1993, Bill and Melinda Gates took a walk on the beach and made a big decision: to give their Microsoft wealth back to society. In conversation with Chris Anderson, the couple talks about their work at the Bill & Melinda Gates Foundation, as well as their marriage, their children, their failures and the satisfaction of giving most of their money away.

http://www.ted.com/talks/bill_and_melinda_gates_why_giving_away_our_wealth_has_been_the_most_satisfying_thing_we_ve_done

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