Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets. 

1st century A.D. Jesus

Do not do unto others all that which is not well for oneself.

6th century B.C. Zoroaster

Hurt not others with that which pains thyself.

6th century B.C. Buddha

Do not do unto others what you do not want others to do unto you.

6th century B.C. Confucius

May I do unto others as I would that they should do unto me.

5th century B.C. Plato

Do not to others which if done to thee would cause thee pain.

3rd century B.C. Mahabharata

Do not do unto others what thou wouldst not they should do unto thee.

1st century B.C. Rabbi Hillel

Lay not on any soul a load which ye would not wish to be laid upon you and desire not for anyone the things you would not desire for yourself.

19th century Bahá 'u 'lláh