The Intelligent Investor: The Definitive Book on Value Investing is a globally recognized masterpiece on investing written by Benjamin Graham, hailed as the "father of value investing." The book has been revised and updated several times and has remained a bestseller for over seven decades. It teaches its readers how to make smart investment decisions by following the principles of value investing.

The book breaks down the complex world of investments into simple and easy-to-understand terms. Graham explains that the intelligent investor should not follow the whims of the stock market, but instead, seek to invest according to fundamental principles of value investing. He suggests using market fluctuations to your advantage by buying low and selling high.

The principles of value investing advocated by Graham have been a guiding force for not only the ordinary investors but also for some of the world's most successful investors. Warren Buffet, one of the richest men in the world, considered Graham's ideas and teachings as an important influence on his own investment approach.

The book covers a wide range of topics that are essential for any investor, such as how to analyze financial statements, how to evaluate stocks, bonds, and mutual funds, and how to calculate intrinsic value.

One of the highlights of the book is the discussion on the concept of "margin of safety." Graham argues that an intelligent investor should always look for a margin of safety when selecting investments. This means investing in stocks that are priced below their intrinsic value, thus providing a buffer against adverse market conditions.

The Intelligent Investor is not just a book on investing; it is a master-class on investment philosophy. It teaches readers to adopt a long-term investment strategy, base their decisions on sound principles, and stay disciplined in their approach.

In conclusion, this book is a must-read for anyone looking to invest intelligently and reap long-term benefits. The principles of value investing explained in the book are timeless and are still relevant in today's fast-paced and volatile investment world.