God is able to create particles of matter of several sizes and figures and perhaps of different densities and forces, and thereby to vary the laws of nature, and make worlds of several sorts in several parts of the Universe.
Isaac NewtonImpressed force is the action exerted on a body to change its state either of resting or of moving uniformly straight forward.
Isaac NewtonPictures, propagated by motion along the fibers of the optic nerves in the brain, are the cause of vision.
Isaac Newton