In Buddhist philosophy, these four qualities are known as the Brahmaviharas, often translated as the "Four Immeasurables" or "Divine Abodes." They represent the highest states of emotional well-being and the ideal way of relating to all living beings.

When practiced together, they create a balanced heart that is both deeply engaged with the world and perfectly at peace.

1. Metta (Loving-Kindness)

Metta is the foundation. It is the sincere wish for the welfare and happiness of oneself and others. Unlike romantic or possessive love, Metta is "unconditional goodwill."

• The Goal: To dissolve the boundaries between "self" and "other."
• The Practice: It usually begins with directing kindness toward oneself and gradually radiating it outward to friends, strangers, and eventually even to enemies.
• The Near Enemy: Selfish affection (loving someone only because of how they make you feel).
• The Far Enemy: Ill will or hatred.

2. Karuna (Compassion)

Karuna is what happens when Metta encounters suffering. It is the quivering of the heart in response to pain—not out of pity, but out of a desire to see that suffering end.

• The Goal: To remain present with pain without being overwhelmed by it.
• The Practice: Cultivating the courage to look at the world’s suffering and responding with a "How can I help?" attitude.
• The Near Enemy: Pity (which creates a hierarchy where you feel "above" the person suffering).
• The Far Enemy: Cruelty or destructive apathy.

3. Mudita (Empathetic Joy)

Mudita is the "antidote to envy." It is the ability to take delight in the success, talents, and good fortune of others. It is often considered the hardest of the four to master because of the human tendency toward competition.

• The Goal: To realize that another person’s happiness does not diminish your own.
• The Practice: Actively celebrating the wins of others, even when your own life feels difficult.
• The Near Enemy: Exuberance or "vicarious joy" that is tainted by personal identification (e.g., being happy for your child's win only because it makes you look good).
• The Far Enemy: Envy or resentment.

4. Upekka (Equanimity)

Upekka is the "balancing point." It is a state of mind that is stable, calm, and grounded, regardless of whether life brings praise or blame, gain or loss. It isn't cold indifference; rather, it is a vast, inclusive perspective.

• The Goal: To provide the stability needed for the other three qualities to remain consistent. Without equanimity, compassion can turn into "compassion fatigue" and joy can turn into over-excitement.
• The Practice: Understanding the law of Kamma (Karma)—recognizing that everyone is the owner of their own actions and that we cannot control everything.
• The Near Enemy: Indifference or "stiff" neutrality (pretending not to care).
• The Far Enemy: Anxiety, greed, or agitation.

How They Work Together

The Brahmaviharas are designed to check and balance each other. For example:

• Compassion (Karuna) keeps Loving-kindness (Metta) from becoming mere sentimentality.
• Equanimity (Upekka) keeps Compassion (Karuna) from falling into despair.
• Joy (Mudita) keeps Equanimity (Upekka) from becoming dry or cold.