"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."
"Stock speculation is largely a matter of A trying to decide what B, C and D are likely to think-with B, C and D trying to do the same."
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Source: Benjamin Graham, David Le Fevre Dodd (1940). “Security Analysis: Principles and Techniques”
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