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 GrahamTraditionally the investor has been the man with patience and the courage of his convictions who would buy when the harried or disheartened speculator was selling.
Benjamin GrahamThe essence of investment management is the management of risks, not the management of returns.
Benjamin Graham