The Meaning of "An Eye for an Eye" — Originally a Warning Against Revenge

"If they got you, then it's an eye for an eye." This line is often used to justify revenge — but its original meaning is, in fact, a little different. This article traces the meaning and origin of "an eye for an eye" back to its sources, and discusses how to live with the wish to retaliate.

The meaning of "an eye for an eye, a tooth for a tooth"

"An eye for an eye, a tooth for a tooth" means returning to the offender harm equal to the harm received: an eye for a wounded eye, a tooth for a broken tooth — a demand for a reprisal proportional to the injury.

Today it is often cited in the sense of "if they hit you, hit back," urging retaliation. Yet when we trace the background in which the phrase was born, its original intent turns out to have been closer to the opposite.

Its origin: Hammurabi's Code and the lex talionis

The phrase is said to go back some 3,800 years, to the Code of Hammurabi laid down in ancient Mesopotamia around the eighteenth century BCE. Among that code's more than 280 clauses stood a provision to the effect that "if a man destroys the eye of another, his own eye shall be destroyed."

The idea of returning harm equal to the harm inflicted is known in law by the Latin name lex talionis — the principle of proportional retaliation. What matters is that this was not an encouragement of revenge but a rule that set a ceiling on it. In those days, if the injured party took reprisal without limit, conflict escalated without end; if losing one eye meant killing the offender, society itself could not hold together. So the principle fixed a maximum: "you may return only up to the same measure of harm you received."

In other words, "an eye for an eye" was not a call for vengeance but a piece of ancient wisdom, warning against excessive reprisal and keeping it within proportion to the injury. The code also applied this principle between parties of equal social standing, substituting monetary compensation where their ranks differed — a reflection of that society's structure. Knowing its origin changes how the line looks a great deal.

The Old Testament, and the words that go beyond it

Provisions of the same intent appear more than once in the Old Testament. Exodus, Leviticus, and Deuteronomy each record the line "an eye for an eye, a tooth for a tooth, a hand for a hand, a foot for a foot," and here too it worked to keep boundless revenge within proportion.

What is striking is that, later, in the New Testament, Jesus quotes this very line only to point to a different road: "You have heard it said, 'an eye for an eye.' But I say to you, do not resist an evildoer" — words taken to teach stepping out of the chain of retaliation altogether. From the ancient wisdom of "permitting up to equal harm" to the thought of "leaving revenge behind." This one line mirrors the very history of how humankind, over a long span of time, has kept re-examining how to face the wish to strike back.

Handling the wish to "return the same"

That said, when you are unjustly hurt, wishing to "return the same" is an entirely natural feeling. Psychology, too, holds the impulse to retaliate to be a legitimate response to a breach of fairness, and there is no need to force it away.

What matters is holding apart two things: feeling this, and acting on it. You are free to feel; but if you act, you in turn become a party to a new conflict. As that ancient law set a ceiling, and as the thought that followed taught stepping out of the chain, try drawing a line, for now, between the feeling and the deed. The first step across that line is to "write it out and sort it through."

Yurusen, a place to draw the line

Yurusen is an app for filing the person you could not forgive into a quiet ledger that is yours alone. Instead of acting on the wish to "return the same," you set it down in words. It is a place where the feeling itself can be handled safely, on the premise that no one else will see it.

Rather than taking revenge, you first give the feeling an outline. Even that alone lets the heat of vengeance that filled you settle, little by little, to a more manageable size. As that law did 3,800 years ago, you draw a quiet ceiling line within your own heart. That is this ledger's modest role.

For more on living with the urge to retaliate, see also How to live with the wish for revenge.