Abstract:Observer is a fundamental element of physics and science in general. It also plays an important role in modern psychology as an entity that has ability to be aware of all different contents of conscious and unconscious mind. Observer is a central point of developed personality and represents the origin of creativity, auto-reflective thinking and mental health. Until one is aware of his mind activity which might be fully destructive, he will not go insane. Human mind changes continuously, observer is always the same, stable and present. In generally in the universe all that is made out of quanta changes and is in motion. From this perspective the origin of the observer might be beyond known matter and energy in the sense of Einstein's formula E=mc2. Trivalent logic allows existence of some entity that is not A (matter), is not B (energy), but is C. Application of bijective epistemology and theory of numbers confirm observer might have non-material origin.