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Knowledge has no value except that which can be gained from its application toward some worthy end.
Successful men, in all callings, never stop acquiring specialized knowledge related to their major purpose, business, or profession. Those who are not successful usually make the mistake of believing that the knowledge acquiring period ends when one finishes school. The truth is that schooling does but little more than to put one in the way of learning how to acquire practical knowledge.
entirely. When a merchant finds that a certain line of merchandise is not selling, he usually supplants it with another that is in demand. The person whose business is that of marketing personal services must also be an efficient merchant. If his services do not bring adequate returns in one occupation, he must change to another, where broader opportunities are available.

