Page "Naturalistic fallacy" Paragraph 2

Another usage of the phrase was described by British philosopher G. E. Moore in his 1903 book Principia Ethica.

Moore stated that a naturalistic fallacy is committed whenever a philosopher attempts to prove a claim about ethics by appealing to a definition of the term " good " in terms of one or more natural properties ( such as " pleasant ", " more evolved ", " desired ", etc.

).