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"Only one eye for one eye", also known as "An eye for an eye" or "A tooth for a tooth", or the law of retaliation, is the principle that a person who has injured another person is to be penalized to a similar degree, and the person inflicting such punishment should be the injured party. In softer interpretations, it means the victim receives the [estimated] value of the injury in compensation. The intent behind the principle was to restrict compensation to the value of the loss.
 
The principle is sometimes referred using the Latin term lex talionis or the law of talion. The English word talion (from the Latin talio) means a retaliation authorized by law, in which the punishment corresponds in kind and degree to the injury.

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