Thomas Alva Edison
Thomas Edison as expelled from school for being unteachable. Fortunately, Edison's mother believed in him and encourage him to continue his education, even teaching him herself at one point. Things didn't get any better for Thomas when he entered the workforce. He was unceremoniously fired from his first jobs because he was not productive enough. Even his first thousand or more attempts at getting the light bulb to work were failures. In spite of all of his failures, Edison was a prolific inventor who had amassed several patents by the time he died, including the light bulb and the movie projector.