Loving-kindness (metta), Compassion (karuna), Sympathetic Joy (mudita), Equanimity (upekkha). In Pali, the language of the Buddhist scriptures, these four are known under the name of Brahma-viharas. This term may be translated as high or sublime states of mind or as divine (Brahma) abodes (vihara).
These four attitudes are highly praised because they are an ideal way of relating towards living beings. They provide, in fact, the answer to all situations arising from social contact. They are the great removers of tension, the great peace-makers in social conflict, and the great healers of wounds suffered in the struggle of existence. They level social barriers, build harmonious communities, awaken generosity, revive joy and hope, and promote human connection.
They are called abodes because they should become the mind’s constant dwelling-places where we feel “at home”; they should not remain merely places of rare and short visits, soon forgotten. In other words, our minds should become thoroughly saturated by them. They should become our inseparable companions, and we should be mindful of them in all our common activities. As the Metta Sutta, the Song of Loving-kindness, says:
When standing, walking, sitting, lying down,
Whenever he feels free of tiredness
Let him establish well this mindfulness —
This, it is said, is the Divine Abode