You don't know more than the market knows
David Laibson. Professor of economics, Harvard University
It's easy to trick yourself into thinking you can outplay the market. You might outplay it for a while, but it will get you in the end.
The less you pay, the more you keep
Burton Malkiel, Author, "A Random Walk Down Wall Street"
It's hard to be certain of anything in uncertain financial markets. But Malkiel feels very confident about one piece of advice: Minimize your investment expenses. The less you pay in mutual fund fees, brokerage costs, sales fees and taxes, the greater your net return.