David Gauthier`s “neo-Hobbean” theory argues that cooperation between two independent and selfish parties is indeed possible, especially when it comes to understanding morality and politics.  Gauthier particularly highlights the benefits of cooperation between two parties with regard to the challenge of the prisoners` dilemma. He proposed that, if two parties respected the originally agreed agreement and morality, which were defined in the treaty, both would achieve an optimal result.   In his social contract model, factors such as trust, rationality and self-interest keep each party honest and prevent them from breaking the rules.   Hobbes borrowed a concept from English contract law: a tacit agreement. Hobbes claimed that the people agreed among themselves to “renounce” their natural rights to equality and freedom and give absolute power to a sovereign. (There is a reasonable argument that we can find in Hobbes a primitive version of the prisoners` dilemma problem.) We should think of ourselves as individual Robinson Crusoes who each live on our own island, happy or unhappy in relation to our talents and the natural dispositions of our islands, but able to enter into negotiation and business to exchange goods and services. They allowed his mother and father to marry and thus have legitimate children, including themselves. After his birth, the city of Athens required by its laws that his father take care of him and educate him. Socrates` life and how this life in Athens progressed depend on the laws. But it is important that this relationship between citizens and the laws of the city is not forced. .