Elon Musk on His Fears, Dreams, Twitter, Morality and Mars

The New York Times has called Elon Musk "arguably the most successful and important entrepreneur in the world." It's an easy case to make: He's probably the only person who has started four billion-dollar companies – PayPal, Tesla, SpaceX and Solar City. But at his core,

This article originally appeared on www.rollingstone.com: Elon Musk on His Fears, Dreams, Twitter, Morality and Mars

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