Loss avoidance must be the cornerstone of your investment philosophy.

When a government official says a problem has been "contained," pay no attention.

Be sure that you are well compensated for illiquidity - especially illiquidity without control - because it can create particularly high opportunity costs.

One of the biggest challenges in investing is that the opportunity set available today is not the complete opportunity set that should be considered. Limiting your opportunity set to the one immediately at hand would be like limiting your spouse to the students you met in high school

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.

Value investing is simple to understand but difficult to implement. Value investors are not supersophisticated analytical wizards who create and apply intricate computer models to find attractive opportunities or assess underlying value. The hard part is discipline, patience, and judgment. Investors need discipline to avoid the many unattractive pitches that are thrown, patience to wait for the right pitch, and judgment to know when it is time to swing.

Warren Buffett once wrote that value investing is like an inoculation--it either takes or it doesn't--and when you explain to somebody what it is and how it works and why it works and show them the returns, either they get it or they don't.