But over the long term, money and power by themselves are like a two-legged stool—you can balance on them for a while, but eventually you’re going to topple over. And more and more people—very successful people—are toppling over. So what I pointed out to the Smith College graduates was that the way we’ve defined success is not enough. And it’s no longer sustainable: It’s no longer sustainable for human beings or for societies. To live the lives we truly want and deserve, and not just the lives we settle for, we need a Third Metric, a third measure of success that goes beyond the two metrics of
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