The four Brahma-vihara are:
1. Maitri : Loving-kindness (Pāli: mettā, Sanskrit: maitrī) is active good will towards all;
: Compassion (Pāli and Sanskrit: karuṇā) results from metta, it is identifying the suffering of others as one’s own;
: Empathetic joy (Pāli and Sanskrit: muditā): is the feeling of joy because others are happy, even if one did not contribute to it, it is a form of sympathetic joy;
: Equanimity (Pāli: upekkhā, Sanskrit: upekṣā): is even-mindedness and serenity, treating everyone impartially.