Note that he didn't say "go to school". If you don't know much about startups, dropping out to do one (as Gates did) might be considered an investment in your e

Note that he didn't say "go to school". If you don't know much about startups, dropping out to do one (as Gates did) might be considered an investment in your education. So might reading widely, or taking online courses, or of course paying a lot of money to attend a 4-year university.