Although biological autonomy is widely discussed, its description in scientific terms remains elusive. I present here a series of recent evidences on the existence of genuine biological autonomy. Nevertheless, nowadays it seems that the only acceptable ground to account for any natural phenomena, including biological autonomy, is physics. But if this were the case, then arguably there would be no way to account for genuine biological autonomy. The way out of such a situation is to build up an exact theoretical (...) biology, and one of the first steps is to clarify the basic concepts of biology, among them biological aim, function and autonomy. We found a physical mechanism to realize biological autonomy, namely, biologically initiated vacuum processes. In the newly emerging picture, biological autonomy shows up as a new, fundamental and inevitable element in our scientific world picture. It offers new perspectives for solving problems regarding the origin and nature of life, connecting ancient Greek philosophy with modern science. Namely, our proposal sheds light in what sense can the God as conceived by Xenophanes can move the material objects of the Universe by its thoughts without toil. (shrink)