Human are social animals, as they lived together, they have to behave towards to each other and each man will have his own reason to do or not to do something. Naturally, human beings could treat each other badly, or exploitation if they would get the benefit, comfortable or happiness as a reward. If everyone followed that action, the society would be chaotic. And finally, no one would be able to live peacefully in the society anymore. By these reason, we need to have the common rules to control over everyone to make them to be in the way which they should be. And these are the beginning of the two words; Laws and Justice