The teaching that we should treat others as we ourselves would wish to be treated, an ethic variously repeated in all the great religions... sums up the moral attitude, the peace-inducing aspect, extending through these religions irrespective of their place or time of origin; it also signifies an aspect of unity which is their essential virtue, a virtue mankind in its disjointed view of history has failed to appreciate.

The Promise of World Peace, Universal House of Justice, October 1985, pg. 4

The Golden Rule:

Bahá'í Faith
Lay not on any soul a load that you would not wish to be laid upon you, and desire not for anyone the things you would not desire for yourself. (Bahá’u’lláh.Gleanings, LXVI:8)

Buddhism
Treat not others in ways that you yourself would find hurtful.
(Buddha, Udana-Varga 5.18)

Christianity
In everything, do to others as you would have them do to you; for this is the law and the prophets.
(Jesus, Matthew 7:12)

Confucianism
One word which sums up the basis of all good conduct. . .loving kindness. Do not do to others what you do not want done to yourself.
(Confucius, Analects 15.23)

Hinduism
This is the sum of duty: do not do to others what would cause pain if done to you.
(Mahabharata 5:1517)

Islam
Not one of you truly believes until you wish for others what you wish for yourself.
(Muhammad, Hadith)

Jainism
One should treat all creatures in the world as one would like to be treated.
(Mahavira, Sutrakritanga)

Judaism
What is hateful to you, do not do to your neighbor. This is the whole Torah; all the rest is commentary.
(Hillel, Talmud, Shabbath 31a)

Sikhism
I am a stranger to no one; and no one is a stranger to me. Indeed, I am a friend to all.
(Guru Granth Sahib, pg. 1299)

Taoism
Regard your neighbor's gain as your own gain and your neighbor's loss as your own loss.
(T'ai Shang Kan Ying P'ien, 213-218)

Zoroastrianism
Do not do unto others whatever is injurious to yourself.
(Shayast-na-Shayast 13.29)