Wide ears and short tongues are best. Better a good name than a fine face. A friend to all is a friend to none. Biting and scratching is Scots folk's wooing. Fair words won't make the pot boil.
Anger is more hurtful than the wrong that caused it.
If you spend a year with a cripple you'll limp at the end of it. He was a bold man who first ate a Haggis. Never argue - simply keep repeating your assertion. Love of our neighbor is the only door out of the dungeon of self. Friends are lost by calling too often, and calling too seldom.