Kim, 55, comes from a humble background, at one time sharing a room with seven family members. He was the first of his siblings to attend college, studying at the prestigious Seoul National University, where he offered private tutoring to help pay his tuition.
He has signed the Giving Pledge initiative started by Warren Buffett, Bill Gates and Melinda French Gates, promising to donate most of his fortune to help solve social issues.
“Having grown up in poverty, up until my 30s, I regarded ‘becoming rich’ the sole measure of a successful life,” Kim wrote in a statement in March when he took the pledge. “However, after having achieved the wealth that I had aimed for, I was left feeling rudderless and lacking direction.”