You must be respectful and assenting, but without being servile and abject. You must be frank, but without indiscretion, and close, without being costive. You must keep up dignity of character, without the least pride of birth, or rank. You must be gay, within all the bounds of decency and respect; and grave, without the affectation of wisdom, which does not become the age of twenty. You must be essentially secret, without being dark and mysterious. You must be firm, and even bold, but with great seeming modesty.
Lord Chesterfield