#principle.natural_law  a basic truth or law or assumption: "the principles of democracy"
  supertype:  #natural_law__naturallaw__law  a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society
  instance:  #Tao
  subtype:  #dictate  a guiding principle: "the dictates of reason"
  subtype:  #fundamentals__basics__fundamental_principle__fundamentalprinciple__basic_principle__basicprinciple__bedrock  principles from which other truths can be derived; "first you must learn the fundamentals"; "let's get down to basics"
     subtype:  #first_rudiment__firstrudiment__rudiment__first_principle__firstprinciple__alphabet__ABC__ABC's__ABCs  the elementary stages of any subject (usually plural); "he mastered the rudiments of geometry"
  subtype:  #logic.principle  the principles that guide reasoning within a given field or situation; "economic logic requires it"; "by the logic of war"
  subtype:  #pleasure_principle__pleasure-pain_principle__pleasure-unpleasure_principle  (psychoanalysis) the governing principle of the id; the principle that an infant seeks gratification and fails to distinguish fantasy from reality
  subtype:  #reality_principle__realityprinciple  (psychoanalysis) the governing principle of the ego; the principle that as a child grows it becomes aware of the real environment and the need to accommodate to it
  subtype:  #conservation.principle  (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
     subtype:  #conservation_of_charge__conservation_of_electricity  the principle that the total electric charge of a system remains constant despite changes inside the system
     subtype:  #law_of_conservation_of_energy__conservation_of_energy__first_law_of_thermodynamics  the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes
     subtype:  #law_of_conservation_of_mass__lawofconservationofmas__conservationofmas__conservation_of_matter__law_of_conservation_of_matter  a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
     subtype:  #conservation_of_momentum  the principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system
     subtype:  #conservation_of_parity__parity__space-reflection_symmetry__mirror_symmetry  (physics) parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system

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