Cosmopolitan Principles · The Foundations
Reciprocity
Reciprocity connects diverse faiths and values across the globe, embraced by billions through teachings that emphasize mutual respect and kindness.
Watch & Learn
One Principle, Shared by Billions
A short introduction to reciprocity — the ethic of mutual respect that recurs, independently, in the teachings of the world’s great traditions. A quiz accompanies this lesson.
One Ethic, Every Corner of the Map
From the Americas to East Asia, the world’s dominant traditions — mapped here by country — each arrived independently at the same moral core: treat others as you wish to be treated. The voices below, spanning three millennia, say it in their own words.
Reciprocity Formulation Counts were gathered from The Golden Rule Project's Formulation List.
Population Statistics and National Majority statistics were derived from the 2022 Statista Global Religious Population Dataset.
Prevailing religious tradition by country (2022) — every one of them teaches a form of the Golden Rule.
The World’s Faiths & Philosophies
One Rule, Billions of Believers
Eight of the largest traditions on Earth — together the moral home of most of humanity — each teach reciprocity in their founding texts.
Jesus
Matthew 7:12 (c. 30 CE)
“Therefore whatever you desire for men to do to you, you shall also do to them; for this is the law and the prophets.”
Christian Population
National Majorities
Reciprocity Formulations
Muhammad
Hadith – Musnad Aḥmad 13463 (c. 570–632 CE)
“None of you has faith until he loves for the people what he loves for himself, and until he loves a person only for the sake of Allah the Exalted.”
Muslim Population
National Majorities
Reciprocity Formulations
Immanuel Kant
Groundwork of the Metaphysics of Morals (1785 CE)
“Act according to maxims of a universally legislating member of a merely possible kingdom of ends.”
Unaffiliated Population
National Majorities
Formulations
Vidura
Mahabharata 5 1517 (c. 400 BCE)
“This is the sum of duty. Do not unto others that which would cause you pain if done to you.”
Hindu Population
National Majorities
Reciprocity Formulations
Buddha
Dhammapada Verses 131-132 (c. 563–483 BCE)
“He who seeks his own happiness by oppressing others, who also desire to have happiness, will not find happiness in his next existence. He who seeks his own happiness by not oppressing others, who also desire to have happiness, will find happiness in his next existence.”
Buddhist Population
National Majorities
Reciprocity Formulations
Lao Tzu
Tao Te Ching, Chapter 49 (c. 600-400 BCE)
“The sage has no concern for himself but makes the concerns of others his own. He is good to those who are good. He is also good to those who are not good. That is the virtue of good.”
Folk Populations
National Majorities
Reciprocity Formulations
Confucius
Analects 6:30 (c. 551–479 BCE)
“Now the man of perfect virtue, wishing to be established himself, seeks also to establish others; wishing to be enlarged himself, he seeks also to enlarge others. To be able to judge of others by what is nigh in ourselves? This may be called the art of virtue.”
Other Religious Populations
National Majorities
Reciprocity Formulations
Moses
Leviticus 19:18, Torah (c. 700-500 BCE)
“You shall not take vengeance or bear a grudge against your kinsfolk. Love your neighbor as yourself: I am the LORD.”
Jewish Population
National Majorities
Reciprocity Formulations
Woven Together
Our Shared Ancestry.
This video reveals our deep connection to one another through shared ancestry. It beautifully illustrates how reciprocity and unity are woven into our humanity.
Across Cultures & Time
Reciprocity Across Cultures and Time.
Throughout history, the principle of reciprocity has united thinkers across diverse cultures and eras, highlighting shared beliefs in mutual respect and fairness.
The Eloquent Peasant
Egyptian Middle Kingdom (c. 2040–1650 BCE)
“Now this is the command: Do to the doer to make him do.”
Zoroaster
Avesta, Yasna 43.1 (c. 1500–1000 BCE)
“Mazda Ahura, the Absolute Ruler, has specified that good fortune is for him who makes others happy.”
Hillel the Elder
Shabbat 31a, Talmud (c. 100 BCE – 100 CE)
“That which is hateful unto you, do not do to your neighbor. This is the whole of the Torah; the rest is commentary. Go forth and study.”
Valluvar
Kural 316 (c. 100 BCE – 100 CE)
“What his own soul has felt as bitter pain, From making others feel should man abstain.”
Seneca
On Anger, 3.12 (c. 41–49 CE)
“No one says to himself, ‘I myself have done or might have done this very thing which I am angry with another for doing’ … Let us put ourselves in the place of him with whom we are angry: at present. An over-weening conceit of our own importance makes us prone to anger, and we are quite willing to do to others what we cannot endure should be done to ourselves”
Adam Smith
The Theory of Moral Sentiments (1759 CE)
“All the members of human society stand in need of each other’s assistance and are likewise exposed to mutual injuries. Where the necessary assistance is reciprocally afforded from love, from gratitude, from friendship, and esteem, the society flourishes and is happy. All the different members of it are bound together by the agreeable bands of love and affection, and are, as it were, drawn to one common Centre of mutual good offices.”
Chief Seattle
Speech to Washington Territory – 1854 CE
“Whatever befalls the earth befalls the sons of the earth. Man did not weave the web of life; he is merely a strand in it. Whatever he does to the web, he does to himself.”
Karl Marx
Critique of the Gotha Programme (1875 CE)
“Accordingly, the individual producer receives back from society — exactly what he gives to it. What he has given to it is his individual quantum of labor. He receives a certificate from society that he has furnished such-and-such an amount of labor (after deducting his labor for the common funds); and with this certificate, he draws from the social stock of means of consumption as much as the same amount of labor cost. The same amount of labor which he has given to society in one form, he receives back in another.”
In the Wild
Reciprocity in Nature.
This video demonstrates how even primates instinctively recognize fairness and reciprocity, reflecting these principles in nature.
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