It allows those whom do possess reason to drop down to the more primitive levels of natural obligation contained within natural right when dealing with individuals considered not to use right reason. It is your natural right to violate the natural law when faced with forces that can not understand it, so madmen and others who lack right reason may be treated without respect to the natural law, within your natural right. .
Amongst those who share right reason it is possible for the natural law to be understood, and the law of nature points to the abolishment of itself and to the creation of peaceful society (Ch.2 II.). Also the natural law makes it clear to people that it is impractical to maintain the vast majority of our natural right, that being our right to all things that may help preserve ourselves. When we leave the state of nature through some contract, we give up all but the part of our natural right that allows us to avoid death and physical injury. The rest of the natural right is transferred to the agreed person or assembly of people and they alone can act within the natural right, with the exception of the loop holes provided by the requirement of right reason, and the continued right to avoid death and injury (Ch.2 III.). With the event of civil society the vast majority of obligation will be based on the initial contract made with the leader(s) and other contracts made with other individuals also under the same contract. According to Hobbes a contract where a promise is made by one party in exchange for some action to be carried out now is a covenant (Ch.2 IX.). Furthermore the fact that the action was carried out by one party is the sign that the what was said was understood and agreed to (Ch.2 X.). But much like the fact that natural law required right reason, covenants require mutual trust. Hobbes states that the mutual trust required for covenants cannot be obtained unless there exists a power which leads them to believe that the other party will have no choice but to carry out the covenant (Ch.