Rudeness is like cancer of the soul. ~ Linda Abney 

Don't sink to their level to try to prove a point. ~ Rose Brickey

 Sometimes people need to learn to control their mouth. ~ Umi Kadarsih

Even I can 'kill' my enemy with a smile and by being polite or remain silent. ~ Sadhana Ray

Why stop to the low level of others. We are better than that. ~ Mel Dixon

I have complete control over my behaviour and so I can be polite as much or as little as I choose. I choose more, so that maybe I can brighten the day of that rude or grumpy person with whom I am interacting. ~ Bernice Miera