  It is worth noting an important respect in which Moore’s argument differs from Kant’s. While Kant’s argument is about the nature of reasoning to moral conclusions, Moore’s is focused directly on the identity of moral properties, however they might be known. Moore thinks that moral properties are not natural and therefore cannot be known by experience. Kant, reasoning in the reverse, thinks that moral properties cannot be known by experience and hence cannot be natural properties. Since natural properties are known through experience and at issue is whether moral properties are natural properties, it is easy to miss this critical difference. Whether Moore’s reasons for thinking that moral properties are not natural turn out to be good reasons, he succeeded in focusing the debate on the strictly ontological issue of identity.