For twelve years, Mary Buffett had the privilege to gain personal and professional access from her father-in-law, Warren Buffett. Now, she shares his investing philosophy, revealing informal discussions she had with this private genius. Buffettology is a detailed analysis of how, Warren Buffett commits capital to an investment only from a business perspective, the strategy that gives him the discipline to exploit the stock market's folly, and how he selects companies that will generate extraordinarily reliable results. It answers questions that for years seem to have eluded professionals and Buffettologists, about how Warren Buffett turned $105,000 into $20 billion and became the world's most famous investor.