The Fourth Law Of Nature, Gratitude As Justice dependeth on Antecedent Covenant; so does Gratitude depend on Antecedent Grace; that is to say, Antecedent Free-gift:  and is the fourth Law of Nature; which may be conceived in this Forme, “That a man which receiveth Benefit from another of meer Grace, Endeavour that he which giveth it, have no reasonable cause to repent him of his good will.”  For no man giveth, but with intention of Good to himselfe; because Gift is Voluntary; and of all Voluntary Acts, the Object is to every man his own Good; of which if men see they shall be frustrated, there will be no beginning of benevolence, or trust; nor consequently of mutuall help; nor of reconciliation of one man to another; and therefore they are to remain still in the condition of War; which is contrary to the first and Fundamentall Law of Nature, which commandeth men to Seek Peace.  The breach of this Law, is called Ingratitude; and hath the same relation to Grace, that Injustice hath to Obligation by Covenant.

The Fifth, Mutuall accommodation, or Compleasance A fifth Law of Nature, is Compleasance; that is to say, “That every man strive to accommodate himselfe to the rest.”  For the understanding whereof, we may consider, that there is in mens aptnesse to Society; a diversity of Nature, rising from their diversity of Affections; not unlike to that we see in stones brought together for building of an Aedifice.  For as that stone which by the asperity, and irregularity of Figure, takes more room from others, than it selfe fills; and for the hardnesse, cannot be easily made plain, and thereby hindereth the building, is by the builders cast away as unprofitable, and troublesome:  so also, a man that by asperity of Nature, will strive to retain those things which to himselfe are superfluous, and to others necessary; and for the stubbornness of his Passions, cannot be corrected, is to be left, or cast out of Society, as combersome thereunto.  For seeing every man, not onely by Right, but also by necessity of Nature, is supposed to endeavour all he can, to obtain that which is necessary for his conservation; He that shall oppose himselfe against it, for things superfluous, is guilty of the warre that thereupon is to follow; and therefore doth that, which is contrary to the fundamentall Law of Nature, which commandeth To Seek Peace.  The observers of this Law, may be called sociable, (the Latines call them Commodi;) The contrary, Stubborn, Insociable, Froward, Intractable.

The Sixth, Facility To Pardon A sixth Law of Nature is this, “That upon caution of the Future time, a man ought to pardon the offences past of them that repenting, desire it.”  For pardon, is nothing but granting of Peace; which though granted to them that persevere in their hostility, be not Peace, but Feare; yet not granted to them that give caution of the Future time, is signe of an aversion to Peace; and therefore contrary to the Law of Nature.