According to the estimate of a prominent advertising firm, above 90 per cent, of the earning capacity of the prominent nostrums is represented by their advertising. And all this advertising is based on the well-proven theory of the public's pitiable ignorance and gullibility in the vitally important matter of health.

Advertising may be described as the science of arresting the human intelligence long enough to get money from it.

Any physician who advertises a positive cure for any disease, who issues nostrum testimonials, who sells his services to a secret remedy, or who diagnoses and treats by mail patients he has never seen, is a quack.

The simplest way to assure sales is to keep changing the product the market for new things is indefinitely elastic. One of the fundamental purposes of advertising, styling, and research is to foster a healthy dissatisfaction.