The heart never grows better by age; I fear rather worse, always harder. A young liar will be an old one, and a young knave will only be a greater knave as he grows older.
— Lord Chesterfield

We are no more free agents than the queen of clubs when she victoriously takes prisoner the knave of hearts.
Mary Wortley Montagu knave quote

A Whig is properly what is called a Trimmer -- that is, a coward to both sides of the question, who dare not be a knave nor an honest man, but is a sort of whiffing, shuffling, cunning, silly, contemptible, unmeaning negation of the two.
— William Hazlitt

Very often, say what you will, a knave is only a fool.
— Voltaire

It is a just political maxim, that every man must be supposed a knave.
— knave quotation by David Hume