"The time has come when advertising, in some hands, has reached the status of a science. It is based on fixed principles and reasonably exact. The causes and effects have been analysed until they are well understood
"The correct methods of procedure have been proved and established. We know what is most effective, and we act on basic law.
"Advertising, once a gamble, has thus become, under able direction, one of the safest business ventures."
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