Knowledge is only one ingredient on arriving at a stock's proper price. The other ingredient, fully as important as information, is sound judgment.
Benjamin GrahamThe distinction between investment and speculation in common stocks has always been a useful one and its disappearance is cause for concern.
Benjamin GrahamMost of the time common stocks are subject to irrational and excessive price fluctuations in both directions as the consequence of the ingrained tendency of most people to speculate or gamble... to give way to hope, fear and greed.
Benjamin GrahamMost businesses change in character and quality over the years, sometimes for the better, perhaps more often for the worse. The investor need not watch his companies' performance like a hawk; but he should give it a good, hard look from time to time.
Benjamin Graham