He who sows courtesy reaps friendship, and he who plants kindness gathers love.

The only way to treat a Prussian is to step on his toes until he apologizes.

To speak kindly does not hurt the tongue.

Good nature without prudence, is foolishness.

If you owe a dog anything, call him “sir.”

An excess of courtesy is discourtesy.

Courteous men learn courtesy from the discourteous.

Never spend time with people who don’t respect you.

Excellent people are honored wherever they go.