In the case of revenge, an eye for an eye and a tooth for a tooth is right when one is sure that kindness and forgiveness will have no power whatever upon the hard heart of the enemy, but on the contrary will make him worse. But so long as there is a chance of meeting the enemy's revenge by kindness the above law must not be practiced. It is better to suppress the enemy before he can rise against us; and it is right to throw him down when he has risen against us.