Beauty is in the eye of the beholder and it may be necessary from time to time to give a stupid or misinformed beholder a black eye.
A smile is a curve that sets everything straight.
A joke is a temporary rebellion against virtue, and its aim is not to degrade the human being but to remind him that is already degraded.
A Flatterer never seems absurd: The Flatter’d always take his Word.
A dirty joke is not, of course, a serious attack upon morality, but it is a sort of mental rebellion.