In Ethics and political philosophy, in social contract theory, religion, and international law, the term state of nature describes the hypothetical way of life that existed before people organised themselves into societies. Philosophers of the state of nature theory propose that there was a historical period before societies existed, and seek answers to the questions: What was life like before civil society?, How did government emerge from such a primitive start?, and What are the hypothetical reasons for entering a state of society by establishing a nation-state?
In some versions of social contract theory, there are freedoms, but no rights in the state of nature; and, by way of the social contract, people create societal rights and obligations. In other versions of social contract theory, society imposes restrictions (law, custom, tradition, etc.) that limit the natural rights of a person. Societies existing before the political state are investigated and studied as palaeolithic history, as archaeology, and as cultural anthropology, as social anthropology, and as ethnology to determine the particulars of the indigenous society's social structures and power structures.
The early Warring States philosopher Mozi was one of the first thinkers in recorded history to develop the idea of the state of nature. He developed the idea to defend the need for a single overall ruler. According to Mozi, in the state of nature, each person has their own moral rules (yi, 義). As a result, people were unable to reach agreements and resources were wasted. Since Mozi promoted ways of strengthening and unifying the state (li, 利), such natural dis-organization was rejected:
In the beginning of human life, when there was yet no law and government, the custom was "everybody according to his rule (yi, 義)." Accordingly each man had his own rule, two men had two different rules and ten men had eleven different rules -- the more people the more different notions. And everybody approved his own moral views and disapproved the views of others, and so arose mutual disapproval among men.