"Do to others what you want them to do to you. This is the meaning of the law of Moses and the teaching of the prophets" - Matthew 7:12
"For all the law is fulfilled in one word, even in this; Thou shalt love thy neighbour as thyself." -Galatians 5:14
"Is there one word that may serve as a rule of practice for all one's life?" The Master said, "Is not reciprocity such a word?" – Confucius
"Never impose on others what you would not choose for yourself." – Confucius
"If people regarded other people's families in the same way that they regard their own, who then would incite their own family to attack that of another? For one would do for others as one would do for oneself." – Mozi
"The sage has no interest of his own, but takes the interests of the people as his own. He is kind to the kind; he is also kind to the unkind: for Virtue is kind. He is faithful to the faithful; he is also faithful to the unfaithful: for Virtue is faithful." –Laozi
"Regard your neighbor's gain as your own gain, and your neighbor's loss as your own loss." –Laozi
"Now this is the command: Do to the doer to cause that he do thus to you."
323 BC papyrus: "That which you hate to be done to you, do not do to another."
"Do not do to your neighbor what you would take ill from him." – Pittacus
"Avoid doing what you would blame others for doing." – Thales
"What you do not want to happen to you, do not do it yourself either. " – Sextus the Pythagorean
"Do not do to others what would anger you if done to you by others." – Isocrates
"What thou avoidest suffering thyself seek not to impose on others." – Epictetus
"It is impossible to live a pleasant life without living wisely and well and justly agreeing 'neither to harm nor be harmed' and it is impossible to live wisely and well and justly without living a pleasant life." – Epicurus
"...it has been shown that to injure anyone is never just anywhere."
"Expect from others what you did to them" - Seneca
"It is not so, as you might believe, that one is made happy through the unhappiness of others" - Seneca
"Hence, keeping these in mind, by self-control and by making dharma (right conduct) your main focus, treat others as you treat yourself." - Sanskrit
"One who, while himself seeking happiness, oppresses with violence other beings who also desire happiness, will not attain happiness hereafter." —Dhammapada
"The Master replied: "How about 'shu' [reciprocity]: never impose on others what you would not choose for yourself?"" -Confucius,
"Hurt not others in ways that you yourself would find hurtful." —Udanavarga
"Putting oneself in the place of another, one should not kill nor cause another to kill."
"Do to no one what you yourself dislike." —Tobit 4:15
"Recognize that your neighbor feels as you do, and keep in mind your own dislikes."
"That which is hateful to you, do not do to your fellow. That is the whole Torah; the rest is the explanation; go and learn." —Talmud, Shabbat 31a
"Do to others what you would want them to do to you." - Luke 6:31
"And one day an authority on the law stood up to put Jesus to the test. “Teacher,” he asked, “what must I do to receive eternal life?
What is written in the Law?” Jesus replied. “How do you understand it?” He answered,
“ Love the Lord your God with all your heart and with all your soul. Love him with all your strength and with all your mind.’ And, ‘Love your neighbor as you love yourself.’
"You have answered correctly,” Jesus replied. “Do that, and you will live.”.
"What you do not wish for yourself, do not do to others." -Confucius
"One should never do that to another which one regards as injurious to one’s own self. This, in brief, is the rule of dharma. Other behavior is due to selfish desires." —Brihaspati, Mahabharata
“...and you should forgive And overlook: Do you not like God to forgive you? And Allah is The Merciful Forgiving.” - Qur'an
“...orphans and the needy, give them something and speak kindly to them. And those who are concerned about the welfare of their own children after their death, should have fear of God [Treat other people's Orphans justly] and guide them properly.” — Qur’an (Surah 4, "The Women," vv. 8-9)
"Just as pain is not agreeable to you, it is so with others. Knowing this principle of equality treat other with respect and compassion." —Suman Suttam , verse 150
"Killing a living being is killing one's own self; showing compassion to a living being is showing compassion to oneself. He who desires his own good, should avoid causing any harm to a living being." —Suman Suttam , verse 151
"You shall not take vengeance or bear a grudge against your kinsfolk. Love your neighbor as yourself: I am the LORD." —Leviticus
"That which is hateful to you, do not do to your fellow. That is the whole Torah; the rest is the explanation; go and learn it." —Talmud, Shabbat 31a, the "Great Principle"
"One should never do wrong in return, nor mistreat any man, no matter how one has been mistreated by him." —Plato
"Thus today we have two golden rules for happiness: 1. Be able to experience anything; and 2. Cause only those things which others are able to experience easily." —Scientology
"The sage has no interest of his own, but takes the interests of the people as his own. He is kind to the kind; he is also kind to the unkind: for Virtue is kind. He is faithful to the faithful; he is also faithful to the unfaithful: for Virtue is faithful." —Tao Teh Ching, Chapter 49
"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
"These eight words the Rede fulfill, 'an ye harm none do as ye will" —The Wiccan Rede
"Here ye these words and heed them well, the words of Dea, thy Mother Goddess, "I command thee thus, O children of the Earth, that that which ye deem harmful unto thyself, the very same shall ye be forbidden from doing unto another, for violence and hatred give rise to the same. My command is thus, that ye shall return all violence and hatred with peacefulness and love, for my Law is love unto all things. Only through love shall ye have peace; yea and verily, only peace and love will cure the world, and subdue all evil." —The Book of Ways, Devotional Wicca
And my personal favorite
"Be excellent to each other...And party on" - Bill and Ted's excellent Adventure.
Listening to: New New Radio Station