For me, politeness is a sine qua non of civilization.
Politeness wins the confidence of princes
Politeness is the most acceptable hypocrisy
If you have no money, be polite.
Play fair. Don't hit people. Say you're sorry when you hurt somebody.
Politeness is the art of choosing among one's real thoughts.
One of the greatest victories you can gain over someone is to beat him at politeness.
Politeness is the art of choosing among your thoughts
Politeness is to human nature what warmth is to wax.
True politeness consists in being easy one's self, and in making every one about one as easy as one can
So let us begin anew - remembering on both sides that civility is not a sign of weakness, and sincerity is always subject to proof
Politeness is organized indifference
Politeness is half good manners and half good lying.
Politeness is the poison of collaboration
Politeness is one of those advantages which we never estimate rightly but by the inconvenience of its loss