  Non-cognitivists deny neither that moral sentences are meaningful nor that they are generally used by speakers in meaningful ways. Thus different sorts of non-cognitivist couple their negative theses with various positive claims about the meanings of moral sentences and about the states of mind that they express. It is the diversity of positive proposals that generates the different varieties of non-cognitivism. Emotivists suggest that moral sentences express or evoke non-cognitive attitudes towards various objects without asserting that the speaker has those attitudes. Norm-expressivists suggest (roughly) that the states of mind expressed by moral sentences are attitudes of acceptance of various norms or rules governing conduct and emotion, perhaps coupled with a judgment that the objects or action under discussion comports with those norms. Prescriptivists suggest that these sentences are a species of prescription or command, and may or may not offer an account of the state of mind such judgments express.