"Non-hatred
The definition of non-hatred is a mental factor that functions as the direct opponent of hatred.
In Guide to the Bodhisattva's Way of Life Shantideva says:
There is no evil greater than anger,
And no virtue greater than patience.
Hatred, or anger, is the most destructive of all non-virtuous minds.
It has the power to destroy our Dharma experiences and the merit we have accumulated in the past.
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There are three types of non-hatred:
1 Non-hatred towards those who harm us
2 Non-hatred towards inanimate objects that cause us suffering
3 Non-hatred towards resultant suffering
The first type is the same as the patience of not-retaliating.
If someone attacks us, insults us, or causes us harm in some other way, and we manage to stop ourself getting angry with them, it is the first type of non-hatred that prevents the anger from arising.
There are many inanimate objects with which we get angry.
For example, we may get angry with the weather if it is too hot or too cold, with our car if it will not start, or with a piece of furniture if it falls on our foot.
Some people are angered by the existence of nuclear weapons or pollution, while others become upset if their food is not to their liking.
Whenever we encounter inanimate objects that cause us suffering we should remember the futility of getting angry with such things and prevent anger by practising the second type of non-hatred.
The third type of non-hatred, non-hatred towards resultant suffering, is the patience of voluntarily enduring suffering."