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A successful investment that lasts a lifetime does not require supernatural intelligence, extraordinary abilities, or information. It is based on the principle of value.
The book The Intelligent Investor, written by Benjamin Graham, who is considered the greatest financial advisor of the century, is based on the principle of value. This means that an investment should be valued based on its financial returns, not on its market value. The goal is to find investments that will provide the best returns for your money.
This principle of value is the basis of all investment strategies. It is not the only basis, but it is the foundation of all others.