It seldom pays to be rude. It never pays to be only half rude. Norman Douglas
Rudeness is the weak man’s imitation of strength. Eric Hoffer
You can’t be truly rude until you understand good manners. Rita Mae Brown
There cannot be greater rudeness than to interrupt another in the current of his discourse. John Locke
No one can be as calculatedly rude as the British, which amazes Americans, who do not understand studied insult and can only offer abuse as a substitute. Paul Gallico
It is more comfortable for me, in the long run, to be rude than polite. Wyndham Lewis