Two things the father of value investing once said

Michael Taylor takes a close look at Warren Buffet’s mentor.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

Benjamin Graham, commonly known as father of value investing, is the author of The Intelligent Investor. This book is widely read all over the world and cited as a must read by many professional investors. 

Benjamin Graham described the difference between the market price of a stock and the intrinsic value of the stock as the ‘margin of safety’. For example, if an investing company has a net asset value of 20p per share, but is available to buy at 15p, then the 5p difference is the margin of safety. This is because we would be able to buy the stock at a discount to its actual value. If the business shut up shop the next day, then surplus assets would be distributed to their owners – the shareholders.

Graham was a firm believer that investment is a business, rather than a game of speculation or betting. It involves a disciplined method that must be followed. The stock investor is not defined as right or wrong by the stock price, but by the facts and analysis.

Warren Buffett’s idea of the stock market being a place where everyday somebody turns up and offers a different price for your shares came from Graham.

Here are two pieces of wisdom from Benjamin Graham.

The intelligent investor is a realist who sells to optimists and buys from pessimists

The intelligent investor looks at every piece of the puzzle – they use all available information to come up with a fair value for a stock. If the current stock price is above this fair value, then the market is being optimistic. Graham would be interested in buying a stock that the market views optimistically.

Instead, he’d rely on there being a margin of safety, and buy a stock that the market is pessimistic about.

In the short run, the market is a voting machine but in the long run, it is a weighing machine

Graham believed that a proper investment decision is made on analysis of the financials and numbers alone. By focusing on what could be quantified, he did not take into account any exuberance or hatred of the stock, and went to work by focusing on what he knew best.

Graham understood that the market would change every day. He knew that people would always be buying and selling, and that this activity affects prices. But he also knew that ultimately the price would eventually reflect the valuation if he stuck around long enough and waited patiently.

He also knew that by ignoring the price action of a stock and focusing solely on the business, he would never succumb to the lure of a fast moving price.

It’s a lesson as relevant today as it was then. There’s always a reason to buy and sell every single day, as Mr Market turns up and offers us new prices on a daily basis. But just because there’s a reason, doesn’t mean that it’s a good one. 

Views expressed in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Group of young friends toasting each other with beers in a pub
Investing Articles

FTSE 100 shares: has a once-a-decade chance to build wealth ended?

The FTSE 100 index has had a strong 2025. But that doesn't mean there might not still be some bargain…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

I asked ChatGPT for its top passive income ideas for 2026 and it said…

Stephen Wright is looking for passive income ideas for 2026. But can asking artificial intelligence for insights offer anything valuable?

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Here’s how a 10-share SIPP could combine both growth and income opportunities!

Juggling the prospects of growth and dividend income within one SIPP can take some effort. Our writer shares his thoughts…

Read more »

Tabletop model of a bear sat on desk in front of monitors showing stock charts
Investing Articles

The stock market might crash in 2026. Here’s why I’m not worried

When Michael Burry forecasts a crash, the stock market takes notice. But do long-term investors actually need to worry about…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

Is this FTSE 250 retailer set for a dramatic recovery in 2026?

FTSE 250 retailer WH Smith is moving on from the accounting issues that have weighed on it in 2025. But…

Read more »

Young Black woman using a debit card at an ATM to withdraw money
Investing Articles

I’m racing to buy dirt cheap income stocks before it’s too late

Income stocks are set to have a terrific year in 2026 with multiple tailwinds supporting dividend growth. Here's what Zaven…

Read more »

ISA Individual Savings Account
Investing Articles

Aiming for a £1k passive income? Here’s how much you’d need in an ISA

Mark Hartley does the maths to calculate how much an investor would need in an ISA when aiming for a…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

Is investing £5,000 enough to earn a £1,000 second income?

Want to start earning a second income in the stock market? Zaven Boyrazian breaks down how investors can aim to…

Read more »