There is no other difﬁcult practice equal to patience – not getting angry with someone who harms you, and even if you do get angry, not remaining so. It is the ultimate austerity. Therefore do not allow yourself even the slightest occasion for anger, which is incompatible with such a sublime austerity as patience.
from the book Nagarjuna's Letter to a Friend: With Commentary by Kangyur Rinpoche
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