Most 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 GrahamThe ideal form of common stock analysis leads to a valuation of the issue which can be compared with the current price to determine whether or not the security is an attractive purchase.
Benjamin GrahamIndividuals who cannot master their emotions are ill-suited to profit from the investment process.
Benjamin Graham