How did we end up here—with saving and investing being such a low national priority?

When I was a kid, we were coming out of the Great Depression and World War II. All you talked about in families was the lack of money and the desire to save and make life better. The past 20 years have been bountiful, but we’re moving through a big crack now, from the subprime thing to everything else. I’d be willing to bet in five years’ time, maybe 10 years, the pendulum will swing back to a much more conscientious rate of personal savings. What we’re going through now is cathartic, but it’s very painful. One of the key things to understand in a free society, which I wish we didn’t have to face, is that there are cycles. It never goes in a straight line. It’s a fundamental fact that market systems go up and down. Life goes up and down. And that’s okay.

I’ve heard you call for a national effort to boost the savings and investment rate. Why is that?
We have a huge national problem. Our savings rate is zero or below zero. It’s a disgrace.

We have to have a national program to launch the savings rate to 10 percent. It almost has to be as important as going to the moon.

You’ve contributed money to John McCain. Does he support such an effort?
This isn’t a political thing. We’ve just got to get some shock component to this. I haven’t found a good way to awaken people at an earlier age to the fact that they have to save and invest.

What percentage of the ­population does what you suggest?
Between 2 and 5 percent of the population invests as it should. It’s shocking to meet people who simply haven’t put aside anything for the future, and they’re now approaching 50. You tell them it’s never too late to start, but, man, deep in your soul, you say, “What has this person been doing?”

Where should people begin if they’ve never invested before?
New investors should be assembling a diversified portfolio. An investor with a smartly diversified portfolio of stocks should expect something like a 10 to 11 percent return per annum. Your money should double every seven years.

All of a new investor’s money should go into stocks?
If you’re younger, it should all be stocks. If you’re over, say, 55, your portfolio should be more diversified—some international stocks, small-cap stocks, low-cost mutual funds, fixed-income investments, some money-market funds—and you should expect an annual return of 8 percent.

What’s an easy rule of thumb for how much to invest, as a percentage of income?
It depends on your age, how much you’ve already invested, and other factors. But a good rule of thumb, if you’re just starting out working, is to put aside 10 percent of your income each year and stick with that over your working life. If you wait until later in life, you’ll need to increase that considerably. At age 62, your life expectancy might be 30 more years.

How much should most investors be actively trading? How often should they rebalance their portfolios?
Certainly some investors trade very actively. There’s no formula for the right number of trades
in their case. But our average client trades only a few times a year. For most of us, the rebalancing is
the important part, and that should be looked at on an annual basis—but also if major changes
in the market occur or if your objectives change. With a portfolio of mutual funds, which is the best way to get diversification, the process is much simpler.