When a child is born he comes without a center of his own. For nine months in the mother's womb he functions with the mother's center as his center; he is not separate.
Then he is born. Then it is utilitarian to think of oneself as having a separate center; otherwise life will become very difficult, almost impossible. To survive, and to struggle for survival in the fight of life, everybody needs a certain idea of who they are. And nobody has any idea. In fact nobody can ever have any idea, because at the deepest core you are a mystery. You can't have any idea of it. At the deepest core you are not individual, you are universal.