-- from "Luminous Heart: The Third Karmapa on Consciousness, Wisdom, and
Buddha Nature", translated by Karl Brunnhölzl, published by Shambhala
Publications
+~
+ It is possible to mistake attachment for loving-kindness and compassion.
+Love and compassion are distinguished from attachment in that they apply
+equally to your friends and your enemies. Genuine love and compassion make no
+distinction based on your relationship to the object of compassion. They are
+the wish that all sentient beings without exception have happiness and the
+causes of happiness, and the wish that all sentient beings without exception
+be free of suffering and the causes of suffering. The keynote of those two
+attitudes is that there is no hope involved of any kind of return or any sort
+of personal satisfaction as a result of the happiness of others.
+ In the case of attachment to someone, you wish that person well but it is
+based on an identification with him or her as “my friend, my son, my
+daughter.” This identification and this feeling of ownership or
+territoriality is related to wanting some kind of return. You enjoy the
+happiness of that person because you have identified with him or her, and
+therefore in essence it is just wishing for your own benefit. Such attachment
+can very easily turn to aversion, anger, and hatred. That is the difference
+between compassion and attachment.
+ -- Khenpo Karthar Rinpoche, from "The Instructions of Gampopa: A Precious
+ Garland of the Supreme Path", published by Shambhala Publications.
+