The Metta Sutra (Sutra on Loving-Kindness)

This is what should be done
By one who is skilled in goodness,
And who knows the path of peace;
Let them be able and upright,
Straightforward and gentle in speech.
Humble and not conceited,
Contented and easily satisfied.
Unburdened with duties and frugal in their ways.
Peaceful and calm, and wise and skillful,
Not proud and demanding in nature.
Let them not do the slightest thing
That the wise would later reprove.
Wishing: in gladness and in safety,
May all living beings be at ease.
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 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.
Even as a mother protects with her life,
Her 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,
Freed from hatred and ill will,
Whether standing or walking, seated or lying down
Free from drowsiness,
One should sustain this recollection.