“The chief, so to say fundamental, characteristic of the woman was an amazing duplicity. She was continually deceitful every minute, apparently apart from any necessity, as it were by instinct, by an impulse such as makes the sparrow chirrup and the cockroach waggle its antennae. She was deceitful with me, with the footman, with the porter, with the tradesmen in the shops, with her acquaintances; not one conversation, not one meeting, took place without affectation and pretense.”

Source: Wikiquote