You shouldn't just pick a stock - you should do your homework.

The Rule of 72 is useful in determining how fast money will grow. Take the annual return from any investment, expressed as a percentage, and divide it into 72. The result is the number of years it will take to double your money.

I don't know anyone who said on their deathbed: 'Gee, I wish I'd spent more time at the office.'

When stocks are attractive, you buy them. Sure, they can go lower. I've bought stocks at $12 that went to $2, but then they later went to $30. You just don't know when you can find the bottom.

Average investors can become experts in their own field and can pick winning stocks as effectively as Wall Street professionals by doing just a little research.

Never buy anything that you can't illustrate on the back of a napkin.

It's human nature to keep doing something as long as it's pleasurable and you can succeed at it, which is why the world population continues to double every 40 years.