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. HopkinsOn most lines, making a sale without making a convert does not count for much. Sales made by conviction - by advertising - are likely to bring permanent customers. People who buy through casual recommendations often do not stick
Claude C. HopkinsNo generality has any weight whatever. It is like saying "how do you do?" When you have no intention of inquiring about ones health. But specific claims when made in print are taken at their value
Claude C. Hopkins