It is his second writing in which he become the most popular. He is arguing that we are born free and equal, one of the things that separates him from the others, he might be the first thinker to put an emphasize on the historical approach on society. The conditions have to be such that it forces the human being to do so. Island that had to communicate with each other, if action cannot be avoided, neither is language, social life is established but civil society isn"t established. Customs not rules, are the stuff that solidifies the community: this cause people to make comparison, that person is the best singer in the community. Once you have a standard, it causes disputes: what happens during people first interact and come together, this is where people are identified, this gives birth to the understanding of inequality. If some fatal chance of happening, he points out to two things to mans decay.