A college diploma is not a prerequisite for obtaining an absurd amount of wealth. Out of the 400 richest people in the U.S., 63 entrepreneurs don't have one-more than 15% of the list. With total U.S. student debt surpassing $1 trillion and unemployment pushing above 10% a budding entrepreneur might be tempted to skip university and instead enroll in the school of hard knocks. Author Michael Ellsberg spent two years inter viewing business titans who did just that for his book The Education of Millionaires (Penguin Group, 2011). Here are a few lessons gleaned from four billionaires who learned from life experience, not lecture halls. In spired? Great. If not, you can always plop down six fig ures and head to campus.
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