Warren Buffett, 95, has retired from his daily role at Berkshire Hathaway, concluding a six-decade career. He is succeeded as CEO by Greg Abel, vice chairman of non-insurance operations, with Buffett remaining as chairman to ensure cultural continuity. Buffett's investment philosophy emphasized patience, long-term holding of quality businesses, and compounding, contrasting with modern market trends favoring speed and speculation. His approach prioritized common sense, understanding businesses, and a margin of safety.