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.

Quote

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.

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– Samuel Hopkins Adams