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Open-question argument - Wikipedia

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The open-question argument is a philosophical argument put forward by British philosopher G. E. Moore in §13 of Principia Ethica (1903),[1] to refute the equating of the property of goodness with some non-moral property, X, whether natural (e.g. pleasure) or supernatural (e.g. God's command). That is, Moore's argument attempts to show that no moral property is identical to a natural property.[2] The argument takes the form of a syllogism modus tollens: The type of question Moore refers to in this argument is an identity question, "Is it true that X is Y?" Such a question is an open question if it can be asked by a person who knows what the words mean; otherwise it is closed. For example, "I know he is a vegan, but does he eat meat?" would be a closed question. However, "I know that it is pleasurable, but is it good?" is an open question; the answer cannot be derived from the meaning of the terms alone. The open-question argument claims that any attempt to identify morality with some se

Open-question argument - Wikipedia Jump to content From Wikipedia, the free encyclopedia Philosophical argument The open-question argument is a philosophical argument put forward by British philosopher G. E. Moore in §13 of Principia Ethica (1903), [ 1 ] to refute the equating of the property of goodness with some non-moral property, X, whether natural (e.g. pleasure ) or supernatural (e.g. God's command ). That is, Moore's argument attempts to show that no moral property is identical to a natural property. [ 2 ] The argument takes the form of a modus tollens : Premise 1: If X is good by defin

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