Warren Buffett, the second richest man in the world who has donated $31 billion to charity, was interviewed for one hour on CNBC. Some interesting aspects about his life are that he bought his first stock at age 11, still lives in the same small house he bought over 50 years ago, and gives simple rules and goals to the CEOs of his 63 companies without regular meetings or calls. His advice is to avoid debt, invest in yourself, appreciate what you have, and choose a simple life.