The heart of the wise teaches his mouth, and adds learning to his lips. — Proverbs 16:23

This is as important to remember when we’re speaking to strangers as well as family and friends. I sometimes let familiarity excuse me from watching what I say, either out of anger or humor.  It’s better to listen and understand before speaking, and let my words be healing with wisdom, rather that scalding with sarcasm or scorn.