Each race determines for itself what indecencies are. Nature knows no indecencies; man invents them. - Mark Twain

I wanted to damage every man in the place, and every woman--and not in their bodies or in their estate, but in their vanity--the place where feeble and foolish people are most vulnerable. So I disguised myself and came back and studied you. You were easy game. You had an old and lofty reputation for honesty, and naturally you were proud of it — it was your treasure of treasures, the very apple of your eye. As soon as I found out that you carefully and vigilantly kept yourselves and your children out of temptation, I knew how to proceed. Why, you simple creatures, the weakest of all weak things is a virtue which has not been tested in the fire.

Pilgrim's Progress, about a man that left his family, it didn't say why.

Explaining humor is a lot like dissecting a frog, you learn a lot in the process, but in the end you kill it.