It sounds kind of crazy, but in times of turmoil in the market, I've felt a sort of serenity in knowing that I've checked and re-checked 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.

Investors should always keep in mind that the most important metric is not the returns achieved but the returns weighed against the risks incurred. Ultimately, nothing should be more important to investors than the ability to sleep soundly at night.

We don't deal in absolutes. We deal in probabilities.

Investing today may well be harder than it has been at any time in our three decades of existence.

Always look for forced urgent selling.

If another person were to enter the building, it would once again be empty.