It is more important to say "no" to an opportunity, than to say "yes".

You should look at stocks as small pieces of business.

The most important investment you can make is in yourself. Very few people get anything like their potential horsepower translated into the actual horsepower of their output in life. Potential exceeds realization for many people...The best asset is your own self. You can become to an enormous degree the person you want to be.

What's hot today isn't likely to be hot tomorrow. The stock market reverts to fundamental returns over the long run. Don't follow the herd.

There are a few investment managers, of course, who are very good - though in the short run, it's difficult to determine whether a great record is due to luck or talent. Most advisors, however, are far better at generating high fees than they are at generating high returns. In truth, their core competence is salesmanship. Rather than listen to their siren songs, investors - large and small - should instead read Jack Bogle's The Little Book of Common Sense Investing.

If principles can become dated, they're not principles.

We've got a wonderful economic formula in this country.