Wall Street can be a dangerous place for investors. You have no choice but to do business there, but you must always be on your guard. The standard behavior of Wall Streeters is to pursue maximization of self-interest; the orientation is usually short term. This must be acknowledged, accepted, and dealt with. If you transact business with Wall Street with these caveats in mind, you can prosper. If you depend on Wall Street to help you, investment success may remain elusive.

Value investing is predicated on the efficient market hypothesis being wrong.

Because investors are not usually penalized for adhering to conventional practices, doing so is the less professionally risky strategy, even though it virtually guarantees against superior performance.

Things that have never happened before are bound to occur with some regularity. You must always be prepared for the unexpected, including sudden, sharp downward swings in markets and the economy. Whatever adverse scenario you can contemplate, reality can be far worse.

Nowhere does it say that investors should strive to make every last dollar of potential profit; consideration of risk must never take a backseat to return. Conservative positioning entering a crisis is crucial: it enables one to maintain long-term oriented, clear thinking, and to focus on new opportunities while others are distracted or even forced to sell. Portfolio hedges must be in place before a crisis hits. One cannot reliably or affordably increase or replace hedges that are rolling off during a financial crisis.

The cost of performing well in bad times can be relative underperformance in good times.

Loss avoidance must be the cornerstone of your investment philosophy.