CHAPTER XV: OF OTHER LAWS OF NATURE
FROM that law of nature by which we are obliged to transfer to another such rights as, being retained, hinder the peace of mankind, there followeth a third; which is this: that men perform their covenants made ; without which covenants are in vain, and but empty words; and the right of all men to all things remaining, we are still in the condition of war.
And in this law of nature consisteth the fountain and original of justice. For where no covenant hath preceded, there hath no right been transferred, and every man has right to everything and consequently, no action can be unjust . But when a covenant is made, then to break it is unjust and the definition of INJUSTICE is no other than the not performance of covenant . And whatsoever is not unjust is just .
But because covenants of mutual trust, where there is a fear of not performance on either part (as hath been said in the former chapter), are invalid, though the original of justice be the making of covenants, yet injustice actually there can be none till the cause of such fear be taken away; which, while men are in the natural condition of war, cannot be done. Therefore before the names of just and unjust can have place, there must be some coercive power to compel men equally to the performance of their covenants, by the terror of some punishment greater than the benefit they expect by the breach of their covenant, and to make good that propriety which by mutual contract men acquire in recompense of the universal right they abandon: and such power there is none before the erection of a Commonwealth. And this is also to be gathered out of the ordinary definition of justice in the Schools: for they say that justice is the constant will of giving to every man his own. And therefore where there is no own, that is, no propriety, there is no injustice; and where there is no coercive power erected, that is, where there is no Commonwealth, there is no propriety, all men having right to all things: therefore where there is no Commonwealth, there nothing is unjust. So that the nature of justice consisteth in keeping of valid covenants, but the validity of covenants begins not but with the constitution of a civil power sufficient to compel men to keep them: and then it is also that propriety begins….