#internal force

• Self-motion — A movement that has its cause inside the very system or object that is displacing, occurring through internal impulses, forces, or contradictions, without being determined by a direct external impulse. In dialectical materialism and classical metaphysics (such as the theories of Aristotle or Hegel), the concept describes the fundamental property of matter to develop, evolve, and transform through its own structural dynamics, rejecting the idea of an external first impulse.