"The Intelligent Investor" is a classic book on value investing written by Benjamin Graham. First published in 1949, it emphasizes the importance of a disciplined approach to investing, focusing on long-term strategies rather than short-term market fluctuations. Graham introduces concepts like "margin of safety" and the distinction between investing and speculation. The book is widely regarded as a foundational text for investors and has influenced many successful investors, including Warren Buffett. It provides practical advice on analyzing stocks, bonds, and other investments, encouraging readers to develop a rational mindset and avoid emotional decision-making in the financial markets.