Bill Gates 

Bill Gates is an American inventor, programmer, philanthropist, best known as a co-founder of software giant company Microsoft. He dropped out of Harvard to start Microsoft along with friend Paul Allen. Harvard Crimson called Gates Harvard’s most successful dropout, while the rest of the world preferred
to name him the world’s richest man for more than a decade. It is estimated that he had donated over
$28 Billion thorough Bill & Melinda Gates Foundation.