Según el Hagakure (de Yamamoto Tsunetomo, siglo XVIII):
In the eyes of mercy, no one should have hateful thoughts. Feel pity for the man who is even more at fault. The area and size of mercy is limitless. It is because mercy is so profound and expansive that the holy men of Tang, India and Japan are still respected to this day.As to what to do for the good, simply, we must withstand pain. If we cannot stand pain we are wrong in everything.Feeling deeply the difference between oneself and others, bearing ill will and falling out with people — these things come from a heart that lacks compassion. If one wraps up everything with a heart of compassion, there will be no coming into conflict with people.It is unkind to speak ill of a man who has committed an offence. It is of no help being remiss and calling down a man living a happy life. We should sympathize with a man who has strayed from the path. It is the right way for the Bushi to help him make a comeback some way or other.
Según Saigo (Bushido):
Never condemn others; but see to it that thou comest not short of thine own mark.
Jin. Rei. Nunca rendirse. Pero al final, si el perdón no se obtiene o no se puede ofrecer, está el seppuku.