P. T. Barnum wrote the Golden Rules for Making Money in 1880. He provides a few paragraphs on each of the 20 golden rules:
1. Don’t mistake your vocation
2. Select the right location
3. Avoid debt
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"Politeness and civility are the best capital ever invested in business. Large stores, gilt signs, flaming advertisements, will all prove unavailing if you or your employees treat your patrons abruptly."
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