Most investors are pretty smart. Yet most investors also remain heavily invested in actively managed stock funds. This is puzzling. The temptation, of course, is to dismiss these folks as ignorant fools. But I suspect these folks know the odds are stacked against them, and yet they are more than happy to take their chances.

Why are people who are appalled at insider trading so quick to trade on inside information when it comes their way?

Santa Claus and the Easter Bunny should take a few pointers from the mutual-fund industry. All three are trying to pull off elaborate hoaxes. But while Santa and the bunny suffer the derision of eight year olds everywhere, actively-managed stock funds still have an ardent following among otherwise clear-thinking adults. This continued loyalty amazes me. Reams of statistics prove that most of the fund industry's stock pickers fail to beat the market.

I am a huge, huge, huge fan of index funds. They are the investor’s best friend and Wall Street’s worst nightmare.

What to do when the market goes down? Read the opinions of the investment gurus who are quoted in the WSJ. And, as you read, laugh. We all know that the pundits can't predict short-term market movements. Yet there they are, desperately trying to sound intelligent when they really haven't got a clue.

Retirement is like a long vacation in Las Vegas. The goal is to enjoy it to the fullest, but not so fully that you run out of money.

It's one of the ironies of investing. The rich can afford to take risks, but they don't need to. The poor need to take risks, but they often can't afford to.