We must have these four sorts of ideas. We must have friendship for all; we must be merciful towards those that are in misery; when people are happy, we ought to be happy; and to the wicked we must be indifferent. So with all subjects that come before us. If the subject is a good one, we shall feel friendly towards it; if the subject of thought is one that is miserable, we must be merciful towards it.
If it is good, we must be glad; if it is evil, we must be indifferent. These attitudes of the mind towards the different subjects that come before it will make the mind peaceful. Most of our difficulties in our daily lives come from being unable to hold our minds in this way.
For instance, if a man does evil to us, instantly we want to react evil, and every reaction of evil shows that we are not able to hold the Chitta down; it comes out in waves towards the object, and we lose our power. Every reaction in the form of hatred or evil is so much loss to the mind; and every evil thought or deed of hatred, or any thought of reaction, if it is controlled, will be laid in our favour.
It is not that we lose by thus restraining ourselves; we are gaining infinitely more than we suspect. Each time we suppress hatred, or a feeling of anger, it is so much good energy stored up in our favour; that piece of energy will be converted into the higher powers. (I, 222-223)