The thesis in the book starts with questioning existing postulates and introducing one new postulate: Nothing exists in isolation, i.e. everything exists in relations. Then, based on this postulate, a principle is formulated and a theory that takes us further and deeper into the physical reality. 1. The thesis is that in the physical reality continuous flows of packages moves in "tubes" between all systems resulting in gravitation, force and energy. These flows contain all mass in Universe, including dark matter and dark energy, i.e. the same principle rules at all levels of the physical reality. 2. The equation E=mc2 is inquired, where Einstein