The first level of reality and self-knowledge is the physical world. He discovers himself with his body and his senses.
The second level is the psychic world. He discovers himself by diving into his psychological world, into his psyche giving access to the soul.
The third and final world is spiritual. He discovers himself in his inner world. The majority of human beings find themselves before this threshold. It is by penetrating inside themselves that they can discover the divine and impersonal dimension.
The majority find themselves stuck in the unfolding of personal, historical and objective events. The beings traveling through the immensity of the third level insert themselves into their interiority. Far from believing themselves superior, they only experience a difference and a detached, impersonalized view. The boundary between inside and outside is gradually disappearing.