Abstract
Ultimate reality is an entity that is invariant against time and condition. Nothing in the material universe is invariant against time and condition to be termed as ultimate reality. The universe itself did not exist before. It originated 13.7 billions years ago in the so called Big Bang. What, if anything, existed before the Big Bang and from what and how the universe originated are science's most pressing questions. It has been proved by the thought experiment that one knows that he is without bringing his body into picture and without using his five senses, mind and intellect which implies that the knowledge of self existence is independent of body, five senses and mind, and the consciousness that gives rise to the knowledge of self existence has independent existence. Since this consciousness is independent of body and mind it must be the same for all. Because of this it is called undifferentiated consciousness. It has been found that the knowledge of self existence remains unchanged under all times and under all conditions during entire life time of every person. Therefore, undifferentiated consciousness (UC) that give rise to the knowledge of self existence is ultimate reality. UC is timeless because of being changeless. Being ultimate reality ever present UC was before the Big Bang and the universe (energy) came out of it as there was nothing else. Universe originated by the inter conversion of UC and energy.
Prem Nath Tiwari