Literary qualifications have no more to do with it than oratory has with salesmanship. One must be able to express himself briefly, clearly, and convincingly, just as a salesman must.
Claude C. HopkinsPlatitudes and generalities roll off the human understanding like water from a duck.
Claude C. HopkinsThe man who wins out and survives does so only because of superior science and strategy.
Claude C. HopkinsScientific advertising has altered many old plans and conceptions. It has proved many long established methods to be folly
Claude C. Hopkins