You don't need super-intelligence to figure out why these two dividend stocks are smart long-term investments."The true investor...will do better if he forgets about the stock market and pays attention to his dividend returns." -- Benjamin GrahamMany investors follow closely the ups and downs of the stock market, waiting for share price gains. Many investors also overlook another strong source of returns: the dividends many companies dish out to shareholders. If you're browsing for ideas, here are two rock- ...