When you've $1bn, it's not yours, it's society's trust: Ma in 2015

During the 2015 World Economic Forum, Chinese billionaire Jack Ma had said, "When you have one billion dollars, that's not your money. That's the trust society gives to you." Jack Ma added, "To change the world, we must change ourselves. Changing ourselves is more important and easier." Ma is set to retire from Alibaba on his 54th birthday on Monday.