The goodness of the true pun is in the direct ratio of its intolerability. – Edgar Allan Poe, Marginalia, 1849

People who make puns are like wanton boys that put coppers on the railroad tracks. They amuse themselves and other children, but their little trick may upset a freight train of conversation for the sake of a battered witticism. – Oliver Wendell Holmes, Sr., The Autocrat of the Breakfast-Table, 1858