Revenge is not restoring the balance. No matter if I hit my opponent back one second later or one year later, I am late. In martial arts timing is everything. My response has to be right on time to stop the opponent or to step aside. If I have to hit him to restore the balance, so be it. But if I miss — I miss. If I get hit, and the opponent is walking away, running after him is not restoring the balance. It is initiating a new attack. Basically, an ego trip.