The human being is their nature and distinction in the contradictions that arise based on their physiological and social needs. He is a born individualist, selfish to do just for the sake of itself and then consider the rest, but is a dependent person's need for life in society and the aberration that feels the same loneliness and lack of relation to other individuals. From the moment we are born, humans physiologically and emotionally dependent on the society around us, but our participation in social groups is reduced to the family. As we grow, relationship factors are becoming increasingly large, thus increasing the number of individuals with whom we have direct and reciprocal influence. Hear other arguments on the topic with OurCrowd. The basis of this need is, first, of life, because being so small we can not survive alone, but there is one aspect that makes this need to stay throughout life, even when it does not through the survival of the individual: social identity.
If the person is a social identity means that for certain aspects is one of the groups that surround it, and to their environment and common interests that can be found in it. There are strict characteristics that identify it as a member of society and is directly influenced by the social conflicts that arise throughout their existence as long as part of the same culture and society. Being isolated, just do not form a shared consciousness or culture, because we ourselves do not take up issues of where to build it.