1. Bill Gates
One of the most famous dropouts in history, Bill Gates stopped studying law and mathematics at Harvard to found Microsoft with Paul Allen.
What followed changed the course of technology as we know it, and produced one of the most popular operating systems of all time.
Currently worth a cool US$79 billion, Gates now funds a number of philanthropic projects through the Bill & Melinda Gates Foundation. This year alone, the foundation has spent US$22.9 million on HIV research, US$12 million on Polio treatment and US$868,090 on vaccine delivery.
Now worth: US$79.3 billion
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