Platitudes and generalities roll off the human understanding like water from a duck.
Claude C. HopkinsRemember the people you address are selfish, as we all are. They care nothing about your interests or profit. They seek service for themselves
Claude C. HopkinsA man coined to superlative must expect that his every statement will be taken with some caution
Claude C. HopkinsThe time has come when advertising has in some hands reached the status of a science.
Claude C. Hopkins