In other words, the market is not a weighing machine, on which the value of each issue is recorded by an exact and impersonal mechanism, in accordance with its specific qualities.
The investor who permits himself to be stampeded or unduly worried by unjustified market declines in his holdings is perversely transforming his basic advantage into a basic disadvantage.
The story of Joseph in Egypt and of the seven fat and the seven lean years has passed into the homely wisdom of the ages; but our economic thinking seems to have lost contact with so simple and basic approach to prudent management of a nations welfare.
The market is a pendulum that forever swings between unsustainable optimism (which makes stocks too expensive) and unjustified pessimism (which makes them too cheap). The intelligent investor is a realist who sells to optimists and buys from pessimists.
In an ideal world, the intelligent investor would hold stocks only when they are cheap and sell them when they become overpriced, then duck into the bunker of bonds and cash until stocks again become cheap enough to buy.
The money cost of the reservoir plan literally fades into insignificance when it is compared with the financial burden which the great depression imposed on the nation.
We have not known a single person who has consistently or lastingly make money by thus “following the market”. We do not hesitate to declare this approach is as fallacious as it is popular.
Intelligent investment is more a matter of mental approach than it is of technique. A sound mental approach toward stock fluctuations is the touchstone of all successful investment under present-day conditions.
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