Follow Knight Kiplinger's basic principles of investing, and prosper. By Knight Kiplinger, Editor Emeritus June 1, 2009 I am an investor. I do not trade my assets frequently. That's speculation, not investing. I am also a saver, fueling my investments with continuous savings from current income. I know that every kind of asset entails risk -- even cash, which can be eroded by inflation. I know that higher returns entail higher risk, in every kind of asset. I accept those risks, but I mitigate them by owning a diversity of assets. I regard my home as a place to live, not as an investment. It is not a substitute for retirement savings. I have an investment plan and a plan for asset allocation, in consultation with a financial adviser. Advertisement I invest regular amounts every month, in both rising and falling markets. I know I cannot gauge market tops and bottoms. If I receive a windfall -- a bonus, bequest or gift -- I gradually feed it into my regular investment mix. I don't pour more money into hot markets nor completely cash out of plunging markets. I spread my investments among several asset classes, in a mix fitting my age and risk tolerance. My share of bonds roughly equals my age. I will allocate to stocks a declining portion of my financial assets as I get older. Advertisement I rebalance my portfolio every quarter. If the stock market plunges, pushing my stock allocation way below its target percentage, I sell bonds and use my cash to buy stocks. I force myself to sell high and buy low by periodic rebalancing-just what is temperamentally difficult for most investors to do. I know that stocks are risky in the short run, so I hold in equities no money for which I have a likely need in the next three years. But stocks are not too risky in the long run. They have outperformed all other commonly traded assets over periods of 15 years and longer. Advertisement Foreign stocks account for at least 15% of my stock allocation. I believe that developing economies will enjoy much higher growth than the U.S. in the decades ahead. I never borrow against my stocks. Margin calls could force me to sell good assets at a bad time. I stick with my game plan. I do not check the value of my investments every day or even every week. I try to keep my cool when other folks are losing theirs. I remind myself often: I am an investor.