The Summary of Physics Restored

232Nature’s movement is continuous and tireless, no less in the parts than in the whole. She always acts, unable to endure idleness, so that if she rested for a moment the fabric of the Universe, bound to the law of perpetual movement, would collapse. The standing earth, peaceful sea and tranquil air are not wholly at rest merely because we do not perceive them moving. As with a sleeping person, this rest is a relaxation of activity, not its loss or cessation. Nature acts inwardly, moves her instruments at every moment and never ceases from action. Even dead bodies undergo the movement of corruption; living things, though they may lack movement from place to place, are nevertheless moved by the activity of their organs.