The things that really shake the human soul aren't beauty or kindness. Although such things are certainly moving, but those feelings don't last long. But... anger or sadness are different. They leave an undelible mark. Even after the wound heals... you can never forget the pain completely.
...his soul (was) ringing like a well-struck bell. But it was a bell that rang with more than joy and adoration - there was the sound there too of anger and resentment. She would not look at him because she did not want to be in his presence. She hated him and he (how could he not?) hated her in return.
In certain situations, manifesting anger is the right attitude; in others it is not the right thing to manifest because it will only add to the violence. In the first case, anger unblocks the conflict and causes another to become more conscious. In the latter, it only adds to the unconsciousness and inflames the conflict. (73)