i am sorry but i dont agree... becasue... if that been the case, it means everyone is not "fair"? whereas i believe and most will agree that not every person is bad... there are good and bad people...so... if it is an eye-for-an-eye, it would be the culprits that will be suffering becasue they will be the one doing the damage at first hand.
i like evaluating such quotes on real/common-sense basis, rather being impressed by 'words'.

and no offensive please.

No amount of experimentation can ever prove me right; a single experiment can prove me wrong - Albert Einstein