No one knows what stocks will do tomorrow, but the evidence is clear as to how they'll perform over 10 or 20 years. They will almost certainly go up.

Stock prices aren't real things. They're just froth on a wave. The wave is the only real thing, which investors forget when they're watching the ticket slither by.

Never try to time the bond market. Anyone who claims to know the future of interest rates is certifiable.

There is a secret to investing that cuts a path directly to the profits that you're looking for. The secret is simplicity. The more elementary your investment style, the more confident you can be of making money in the long run.

Quinn's First Law of Investing is never to buy anything whose price you can't follow in the newspapers. An investment without a public marketplace attracts the fabulists the way picnics attract ants. Stock brokers and financial planners can tell you anything they want, because no one really knows what's true. The First Corollary to Quinn's First Law states that, even when the price is in the newspapers, you shouldn't buy anything too complex to explain to the average 12-year-old.

It's a fact: stock investors sometimes lose money on their way to wealth. Get over it.

Everyone said, 'You can't lose money in real estate, because they're not making any more of it.' Hmmmm. Where did everyone go wrong?