Others will object that good manners are arbitrary and elitist. Certainly all cultures have different ideas about what constitutes good manners. The classic example is that while belching is not acceptable at the Western table, the Bedouin belch to show their appreciation of a meal. So it must be true. Cross-cultural comparisons are worthless in this matter.
Good manners cost nothing but parental time.
Children from the poorest homes can be well-mannered, just as those from rich homes can be brattish and rude. In short, acquiring good manners teaches us to bear, and to forbear. So, if a man will only have these two words at heart, and heed them carefully by ruling and watching over himself, he will for the most part fall into no sin, and his life will be tranquil and serene. Given that many people have never received any moral training, let alone training in good manners, it's not surprising that there are so many dissatisfied, angry and ill-tempered people around these days. And their lack of civility and manners is making life difficult for everybody else.