Leviticus 19:18 (NIV) Do not seek revenge or bear a grudge against one of your people, but love your neighbor as yourself. I am the LORD.
Proverbs 10:12 (NIV) Hatred stirs up dissension, but love covers over all wrongs.
Ecclesiastes 7:9 (NIV) Do not be quickly provoked in your spirit, for anger resides in the lap of fools.
Matthew 5:38-39 (NIV) 38 "You have heard that it was said, 'Eye for eye, and tooth for tooth.' 39 But I tell you, Do not resist an evil person. If someone strikes you on the right cheek, turn to him the other also.
An Arab proverb runs thus: "The neck is bent by the sword, but heart is only bent by heart." Love is irresistible. D. L. Moody (Anecdotes, Incidents and Illustrations)