Quack & Quackery?

• A quack is a person who pretends to have knowledge which he does not possess; 
• who promises to do what he is either not sure he can perform or what he is certain he cannot perform; 
• who represents his practice to be more successful than that of other men; 
• who pretends to cure diseases known and admitted to be incurable; 
• whose manner is confident and imposing; 
• whose tone and language are unhesitating and boastful;
•  who employs remedies, the nature and composition of which he keeps unknownand who deals in specifics and universal remedies. 
• He is addicted to handbills, newspapers and similar modes of making known his pretensions and proceedings. 
• This is the quack and the conduct of this man is quackery.