I believe firmly in the value of all vulgar notions, especially of vulgar jokes. When once you have got hold of a vulgar joke, you may be certain that you have got hold of a subtle and spiritual idea.

“Only poor men get hanged.”

“Killed a policeman? How Vegetarian! Well, I suppose it was, so long as they did…”

“It is the test of a good religion whether you can joke about it.”

“I need not pause to explain that crime is not a disease. It is criminology that…”