Benjamin Graham is widely recognized as the father of modern value investing. His groundbreaking work in the 1930s and 1940s introduced the idea that investors should buy stocks trading below their intrinsic value — that is, the true worth of a company based on its assets, earnings, and long-term potential. Graham emphasized margin of safety, careful financial analysis, and disciplined investing. His most influential book, The Intelligent Investor, remains one of the most respected guides to investing ever written. Graham’s ideas formed the foundation for what would become one of the most successful and widely practiced investment philosophies in the world. He also taught Warren Buffett at Columbia Business School, directly influencing one of the most famous investors in history. Graham’s emphasis on rational analysis over emotion and speculation helped shift the focus of investing from short-term bets to long-term value creation, earning him his place in financial history.