Anger defeats itself is a well know proverb. history is evident of the fact that more works are done by politeness than by anger.
we can't get anything with anger. gets you nowhere. instead of getting the favour we get disfavour. while with politeness we can win even our enemies. politeness gets you favour and happiness while anger gets you disfavour and sorrow. politeness does not mean cowardic, but it means maturity, it means your highness it is wrongly believed that strong man rules the world, but to rule the hearts you have to be polite and generous. any problem can be will solved with politeness, but nothing can be solved with hatred and anger.
politeness is the most important trait in the personality of a human being. it coat us nothing but it could gain us upto any extent.