the origin of an eye for an eye

Many people have used the saying “an eye for an eye” but how many people actually know its origin. The saying “an eye for an eye “was Hammurabi’s code, it means that if you commit a crime you will be punished similarly to what the crime was. For example, if you injure someone your punishment would be having something similar done to you. I think he was trying to cut down on crime but ended up just making it worse because you would have to double any crime that was committed.whats your opinion on this topic?