Proverb used to convince one of not using a weapon (literal or figuritive) because it may come back and hurt yourself. Rather useless especially with the fact that one can learn how to use a double
edge sword (literal or figuritive) effectively.
George: single edge
sword is better to use cuz it wont cut you
Bob: A skilled
swordsman can use any sword.
Jill: Anger is a double edge sword, it hurts you as well.
Jack: I've been using anger for
8 years and I haven't changed a bit.