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As the old saying goes, revenge is a dish best served cold.

Although the expression's origins are a little vague, a French diplomat named Charles Maurice de Telleron Paragord, who lived during the

late 18th and early 19th centuries, is sometimes credited with coining the phrase. Although

there is little supporting detail as to the context or what he actually

meant by it. Variations on the expression turn up again and again in various works of

18th and 19th century French literature.

Only by then the meaning was clear.

Revenge was something to be sought slowly and deliberately and then savored.

Over time the phrases lived on and become part of our cultural framework.

Just as the very acts of vengeance it refers to have played out time and again throughout

history.

Sociologists and psychologists alike claim that revenge serves no real purpose

and is ultimately a self-destructive act.

MRI scans of test subjects and is ultimately a self-destructive act.

MRI scans of test subjects brains have shown that thinking about acts of revenge

actually activates the temporal reward center,

providing the person a shot of the feel-good neurotransmitter dopamine.

And it's not just limited to humans either.

Revenge appears to be a common trait we share with animals as well.

Scientists have observed acts which can only be described as vengeful and many primates.

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