The Discourse on Goodwill (Metta Sutta)

This is what should be done by one who is skilled in goodness and who knows the path of peace: Let them be able, upright, and straightforward, gentle in speech, humble, and not conceited.

Contented and easily supported, with few duties and a simple way of life; Peaceful, calm, wise, and skillful, not proud and demanding in nature.

Let them not do even the slightest thing that the wise would later reprove.

May all beings be happy and safe, may their hearts be filled with joy.

Whatever living beings there may be, whether they are weak or strong, omitting none, the great or the mighty, medium, short, or small, the seen and the unseen, those living near and far away, those born and yet to be born: May all beings be at ease!

Let none deceive another, or despise any being in any state. Let none through anger or ill will wish harm upon another.

Just as a mother would protect with her life her own child, her only child, so with a boundless heart should one cherish all living beings.

Radiating kindness over the entire world, spreading upwards to the skies, and downwards to the depths, outward and unbounded, free from hatred and ill will.

Whether standing or walking, seated or lying down, as long as one is awake, one should sustain this mindfulness: This is said to be the sublime abiding.

Not holding to fixed views, endowed with virtue and insight, having put aside attachment to sensory pleasures, one will surely never be reborn in the cycles of suffering.