From Above
The Right Kind of Prejudice

Courtesy is Not a Tip

Carnal Reason points out some neglected merits of courtesy. 

“My nine year old daughter asked why she should be polite to someone who has been rude to her. Courtesy is not a tip handed out to people who deserve it. Courtesy is not about being nice; it is not even about other people. Courtesy is a discipline with the goal of mental clarity under emotional stress. As long as anger is not allowed to displace manners, the mind remains in control. The polite man remains rational. The man who rages becomes unthinking, and thereby stupid.”

Yes, I rather like that.