He believed that the field was the reality. The field is the stable and underlying force behind the changing physical world. In modern physics, all the different types of force, light, heat, magnetism, electricity, etc., can be accounted for by four fundamental forces. They are gravitation, electro-magnetic, weak and strong nuclear fields. In Einstein's view all is motion.
Motion is the essence of existence.
This universal motion is the eternal, ceaseless, abstract motion, identical with the One Life and the One Law. Simply stated, the observer alters the observed by the mere act of observation. The outcome is effected because the observer is a participant in the event. Researchers affect observations and outcomes through the measurement devices they choose and how they use those devices. Quantum theory reveals the interdependence and relationship between the various parts and the whole of nature, between the observer and the observed, between the individual and the universe.