Bill Gates
The Harvard Crimson called him "Harvard's most successful dropout" — the rest of the world just calls him ridiculously rich. For more than a decade, Bill Gates has been one of the wealthiest, if not the wealthiest, men in the world. The son of an attorney and a schoolteacher, Gates entered Harvard in the fall of 1973, only to drop out two years later to found Microsoft with childhood friend Paul Allen. In 2007, more than thirty years after he left Harvard, the co-founder of Microsoft would finally receive his degree (an honorary doctorate) from his alma mater. At the commencement, Gates said, "I'm a bad influence. That's why I was invited to speak at your graduation. If I had spoken at your orientation, fewer of you might be here today."