Warren Buffet, the second richest man in the world who has donated $31 billion to charity, emphasizes living simply and investing for the long term. He still lives in the same house he purchased over 50 years ago, drives his own car, and does not have an entourage. His meeting with Bill Gates was supposed to last 30 minutes but lasted 10 hours, and Gates became a devotee of Buffet. Buffet advises focusing on self-improvement over luxury goods and spending on others rather than unnecessary things for yourself.