prevented the "social", or society. Life was "anarchic" (without leadership or the concept of sovereignty). Individuals in the state of nature were apolitical and asocial. This state of nature is followed by the social contract. The social contract was seen as an "occurrence" during which individuals came together and ceded some of their individual rights so that others would cede theirs. This resulted in the establishment of the state, a sovereign entity like the individuals now under its rule used to be, which would create laws to regulate social interactions. Human life was thus no longer "a war of all against all". The state system, which grew out of the social contract, was, however, also anarchic (without leadership). Just as the individuals in the state of nature had been sovereigns and thus guided by self-interest and the absence of rights, so states now acted in their self-interest in competition with each other. Just like the state of nature, states were thus bound to be in conflict because there was no sovereign over and above the state (more powerful) capable of imposing some system such as social-contract laws on everyone by force. Indeed, Hobbes' work helped to serve as a basis for the realism theories of international relations, advanced by E. H. Carr and Hans Morgenthau. Hobbes wrote in Leviathan that humans ("we") need the "terrour of some Power" otherwise humans will not heed the law of reciprocity, "(in summe) doing to others, as wee would be done to". John Locke's Second Treatise of Government (1689) John Locke's conception of the social contract differed from Hobbes' in several fundamental ways, retaining only the central notion that persons in a state of nature would willingly come together to form a state. Locke believed that individuals in a state of nature would be bound morally, by the Law of Nature, in which man has the "power... to preserve his property; that is, his life, liberty and estate against the injuries and attempts of other men". Without government to defend them against those seeking to injure or enslave them, Locke further believed people would have no security in their rights and would live in fear. Individuals, to Locke, would only agree to form a state that would provide, in part, a "neutral judge", acting to protect the lives, liberty, and property of those who lived within it. While Hobbes argued for near-absolute authority, Locke