per the Buddhist literature Brahma Vihara are the four "sublime
states" to which we all should aspire. They are the great signs of the
Bodhisattva, who vows to remain in world or samsara - this world
of pain and sorrow - until all creation can be brought into the state of
Maitri is caring, loving kindness displayed to all you meet.
Karuna is compassion or mercy, the kindness shown to those who
Mudita is sympathetic joy, being happy for others, without a
trace of envy.
Upeksa is equanimity or peacefulness, the ability to accept the
ups and downs of life with equal dispassion.