A fool’s lips walk into a fight, and his mouth invites a beating.
(Pro 18:6 ESV)
This proverb requires very little explanation. Our speach such get us out of fights, not into them. If you fight you stand a good chance of getting a healthy clobbering (even if it is just verbal). Even if you do beat the other person, at what cost? You may have won the fight, but you probably lost a friend and you certainly cashed in a lot of your honour. That’s a pretty high price.
Don’t be a fool.