Daddy always says, "Avoid a fight at all cost, but if it can't be avoided you should assume you're going to get your ass kicked, fight hard, never fight dirty, and never brag if you win. A real winner would have been able to settle it without fighting."
He also always says, "When it comes to protecting your family, you fight dirty and don't stop until the threat is gone. Fight to the death if necessary. If you're gonna shoot 'em, you shoot to wound a nuisance (burglar). You shoot to kill a predator (rapist, kidnapper, etc.) No exceptions."