The latest trade of a security creates a dangerous illusion that its market price approximates its true value. This mirage is especially dangerous during periods of market exuberance. The concept of "private market value" as an anchor to the proper valuation of a business can also be greatly skewed during ebullient times and should always be considered with a healthy degree of skepticism.

Warren Buffett is right when he says you should invest as if the market is going to be closed for the next five years. The fundamental principles of value investing, if they make sense to you, can allow you to survive and prosper when everyone else is rudderless. We have a proven map with which to navigate. It sounds kind of crazy, but in times of turmoil in the market. I’ve felt a sort of serenity in knowing that if I’ve checked and rechecked my work, one plus one still equals two regardless of where a stock trades right after I buy it.

Over the long run, the crowd is always wrong.

We continue to adhere to a common-sense view of risk - how much we can lose and the probability of losing it. While this perspective may seem over simplisticor even hopelessly outdated, we believe it provides a vital clarity about the true risks in investing.

The strategy of buying what's in favor is a fool's errand, ensuring long-term underperformance. Only by standing against the prevailing winds - selectively, but resolutely - can an investor prosper over time. But for a while, a value investor typically underperforms.

A margin of safety is achieved when securities are purchased at prices sufficiently below underlying value to allow for human error, bad luck, or extreme volatility in a complex, unpredictable and rapidly changing world.

Value investors will not invest in businesses that they cannot readily understand or ones they find excessively risky. Hence few value investors will own the shares of technology companies. Many also shun commercial banks, which they consider to have unanalyzable assets, as well as property and casualty insurance companies, which have both unanalyzable assets and liabilities.