Manners are a sensitive awareness of the feelings of others. If you have that awareness, you have good manners, no matter what fork you use.
Friends, near or far, are important to us. All of ours have an awareness of other persons' feelings, a courtesy that's inevitable. When I find that consideration in a fan, I'm immediately impressed.
I have more awareness of other people and, I hope, more sensitivity to their needs. I also find that I'm more direct and outspoken.
Manners are a sensitive awareness of the feelings of others.