Friends and foes
Indeed, adversaries and people who try to harm you can be powerful sources of help on the bodhisattva path. By bringing about situations which would normally trigger your anger or hatred, they give you the precious opportunity to train in transforming those negative emotions with patience. On the path, such people will do you far more good than any well-disposed friend.
– Dilgo Khyentse Rinpoche
from the book “The Heart of Compassion: The Thirty-seven Verses on the Practice of a Bodhisattva”
ISBN: 978-1590304570 – http://amzn.to/18Ko0OO