Courtesy-Discourtesy

It is good breeding alone that can prepossess people in your favour at first sight, more time being necessary to discover greater talents. (Lord Chesterfield)

The whole essence of true gentle-breeding (one does not like to say gentility) lies in the wish and the art to be agreeable. Good-breeding is surface-Christianity. (Oliver Wendell Holmes, Sr)

Good breeding consists in concealing how much we think of ourselves and how little we think of other persons. (Mark Twain)

All doors open to courtesy. (Thomas Fuller)

There can be no defence like elaborate courtesy. (E V Lucas)

Politeness is to human nature what warmth is to wax. (Schopenhauer)

Manners are the hypocrisy of a nation. (Balzac)