Comment: Key word in here is necessary.

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Key word in here is necessary.

I clearly understand the difference between society and government as you have pointed out from the quote, yet can you elaborate on the difference between a state and a government for me?

The quote emphasizes the moral justification of a government. It explains at the end also that it is a necessary "evil." some obvious questions are: necessary for what and to whom?
Government is necessary as a negative against vices such as theft, murder and fraud. To whom is it necessary? Society. Society is the result of individuals joining together to make existence easier. Individuals cannot always come to agreement and this is why government is necessary for society.

I agree that there is no moral government of a state and has never been, but I won't argue that society (or a mind) is sustainable without some governing factors, which for lack of a better term one could call government.

State-"a politically organized body of people usually occupying a definite territory ; especially : one that is sovereign b : the political organization of such a body of people c : a government or politically organized society having a particular character " http://i.word.com/idictionary/state

So a state is a society which has an established government.