Lesson #1:   Risk drives return.

Lesson #2:   Diversification within asset classes and allocation across asset classes are the cornerstone of controlling any given level of risk.

Lesson #3:   The best anyone can do over time is to get a market rate of return.

Lesson #4:  Investing is for the long term.

Taken from : Making Sense on the Dollar, by Scott K. Anderson, Jr. CPA, CFP®, EA