Despite all his wealth, Musk’s existence is a cautionary tale. “What shall it profit a man, if he shall gain the whole world, and lose his own soul?” — some homeless Palestinian Elon Musk is, at least on paper, the world’s first trillionaire. He reached that milestone on June 12, after SpaceX debuted as a publicly-traded company on the U.S. stock market at an initial offering of $150 per share.