Benjamin Graham, Warren Buffett, And The Intelligent Investor

Benjamin Graham, Warren Buffett, And The Intelligent Investor


September 4, 2025 | Sasha Wren

Benjamin Graham, Warren Buffett, And The Intelligent Investor


Benjamin Graham And Value Investing

Benjamin Graham is often called the father of value investing. His work in the early 20th century changed how people look at stock markets by avoiding speculation and focusing on disciplined, long-term investing. His approach, based on the intrinsic value of a company, became a cornerstone of modern financial analysis.

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Graham’s Early Career And Investing Philosophy

Graham started out as a financial analyst and professor at Columbia University. His experience during the 1929 stock market crash had a big impact on his outlook. The lessons learned from the Crash and afterward pushed him to work out a conservative, research-driven approach to investing, turning away from speculation and promoting patience in investing decisions.

File:Columbia University - Low Memorial Library (48170370506).jpgAjay Suresh from New York, NY, USA, Wikimedia Commons

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Key Concept: Intrinsic Value

At the heart of Graham’s philosophy is the concept of intrinsic value. He argued that every stock has a real worth that’s based on company earnings, dividends, and financial health. By comparing intrinsic value to market price, investors can zero in on undervalued opportunities and stay away from overpriced, risky purchases.

File:Aktien 1709.jpgHarald Bischoff, Wikimedia Commons

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Key Principle: The Margin Of Safety

Graham emphasized what he called the “margin of safety”: the gap between intrinsic value and market price. By buying stocks well below their real intrinsic value, investors can minimize mistakes, shield themselves from market volatility, and ride through unforeseen downturns. The Margin of Safety principle is still one of the most quoted lessons in investing.

File:Benjamin Graham (1894-1976) portrait on 23 March 1950.jpgAnonymousUnknown author, Wikimedia Commons

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A Mentor For Warren Buffett

While teaching at Columbia, Graham was a major influence on the views of a young Warren Buffett. Buffett later called Graham the greatest teacher he ever had, and the primary source of his own outlook on investing. This mentorship was an extremely fortunate turn in the life of Buffett, and would shape his entire career and philosophy at Berkshire Hathaway.

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Buffett Was An Early Admirer

As a young student, Buffett was so keen to learn from Graham that he applied to Columbia just to study under him. Later, when Buffett worked at Graham-Newman Corp., he began to apply Graham’s wisdom in real-world investing. The close bond made a permanent mark on Buffett’s career.

File:Warren Buffett at the 2015 SelectUSA Investment Summit.jpgUSA International Trade Administration, Wikimedia Commons

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Graham’s Impact On Buffett’s Style

Buffett started out following Graham’s deep value approach: buying cheap, often neglected stocks. Over the years, Buffett modified this approach to include businesses with strong competitive advantages and reliable growth. Still, Buffett credits Graham’s principles of discipline and patience as the real springboard to his long-term success.

Warren Buffett attends the J. Kempin, Getty Images

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The Intelligent Investor As A Guidebook

First published in 1949, Graham’s The Intelligent Investor is by far his most influential work. Unlike technical manuals, it’s aimed at everyday investors. It combines clear explanations of financial principles with time-tested advice about behavior, risk, and market psychology. Warren Buffett famously called it “the best book on investing ever written”. Talk about a vote of confidence!

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The Defensive Investor Strategy

In his opus, Graham defined two different paths: the defensive investor and the enterprising investor. Defensive investors are looking for safety and stability through a diversified, low-maintenance portfolio. Graham encouraged these kinds of investors to focus on bonds and large, stable “blue-chip” type companies, and avoid speculative risks.

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The Enterprising Investor Strategy

For those willing to put in a bit more work, Graham also outlined the enterprising investor approach. This strategy consists of researching undervalued stocks and jumping on opportunities that others have passed up. Graham advised careful analysis, strong financials, and patience. The enterprising investor accepts more work and risk, but has a better chance to make higher returns.

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Mr Market: A Moody And Unpredictable Partner

One of Graham’s most enduring ideas is “Mr Market.” He framed the market as an emotionally mercurial business partner who offers daily prices, sometimes generous, sometimes foolish. Investors win by being able to identify Mr. Market’s more irrational moods and refusing to follow him blindly on his flights of fancy. The metaphor is still just as relevant as ever.

Global Finance ConceptTima Miroshnichenko, Pexels

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The Hazards Of Speculation

Graham always warned against speculation dressed up as investing. He argued that speculators chase trends and gamble away their wealth on short-term movements, while investors stick with the fundamentals. This is a critical distinction to make to avoid bubbles, but it’s a lesson that still gets overlooked amid the uproar of modern financial frenzies.

Woman working alone with stock market using laptopAlex from the Rock, Adobe Stock

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Discipline And Patience Are Key

Graham believed deeply that things like a person’s temperament and personality are more important than intelligence for investing. Successful investors resist following the herd, they don’t panic during downturns, and they keep on track with their long-term goals. Patience and consistency, not brilliance or luck, are the path to lasting financial success.

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The Role Of Bonds And Asset Allocation

Graham stressed finding a balance between stocks and bonds. He recommended keeping allocations flexible according to the current market conditions, but always staying invested in both asset classes. A balanced approach like this helps minimize risk and stabilize returns over time.

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The Continuing Relevance Of Value Investing

Markets have evolved since Graham’s time, but the principles he laid out are still powerful. Intrinsic value analysis, margin of safety, and disciplined behavior are timeless. Even in our own age of algorithms and high-frequency trading, investors who make use of these ideas can still outperform emotion-based, short-term strategies.

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Why Buffett Still Recommends Reading The Intelligent Investor

Buffett rereads The Intelligent Investor regularly and he encourages others to do the same. He believes its wisdom goes beyond investing and into valuable life lessons in discipline, humility, and independent thinking. For Buffett, Graham’s ideas are a blueprint for building wealth and character alike.

Warren Buffett attends Bennett Raglin, Getty Images

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Why Ordinary Investors Should Read It

Today’s investors are under an endless barrage of noise: hot stock tips, financial news cycles, and speculative bubbles. Graham’s work helps us tune out the noise, so we can focus on what matters. By applying his principles, the everyday investor can make rational, long-term decisions that make sense instead of chasing new fads or acting on fear.

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How The Book Can Grow Your Financial Literacy

The Intelligent Investor is more than a book; it’s a framework for thinking. It gives readers tools to analyze opportunities, understand risk, and avoid common mistakes. Reading it not only builds wealth, but also financial literacy, independence, and resilience.

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Graham’s Philosophy As A Compass In Uncertain Times

We can never entirely escape uncertainty in life or in markets, but Graham’s lessons give us a compass. Whether we’re in a recession, a bubble, or a boom, his principles keep investors on the straight and narrow path of focusing on fundamentals, staying disciplined, and maintaining margins of safety. His lessons endure because human behavior rarely changes.

Benjamin GrahamRare Footage: Buffett's Mentor Benjamin Graham on 1950s Market Insights, Seeking Wisdom: Value Investing & Worldly Wisdom

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Why Graham’s Ideas Still Matter

Benjamin Graham passed away in 1976, but his influence lives on through Buffett, modern finance, and millions of investors worldwide. The Intelligent Investor continues to draw forth readers in search of wisdom beyond speculation and buzzwords. It’s a serious must-read for anyone who wants to build wealth with consistency, patience, and purpose.

Graham and Woods testify before the Senate Banking Committee in Washington, DC. They are discussing the stock market and investing.Bettmann, Getty Images

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