Slander is a poison which kills charity, both in the slanderer and the one who listens.

Backbite. To "speak of a man as you find him" when he can't find you.

I am about courting a girl I have had but little acquaintance with. How shall I come to a knowledge of her faults, and whether she has the virtues I imagine she has? Answer. Commend her among her female acquaintances.

You have got to be careful quoting Ronald Reagan, because when you quote him accurately it is called mudslinging.

Let nobody speak mischief of anybody.