  People disagree morally when they have opposing moral convictions. That much can be agreed by all theorists. What is debated is rather what it means for such convictions to be opposing. For example, moral realism entails cognitivism, and cognitivism is the view that moral sentences—the sentences we typically use to express our moral convictions—can be true and false and that the convictions themselves constitute beliefs that purport to represent aspects of reality. That element of their position allows realists to construe moral disagreements as conflicts of belief along the lines of disputes about (other) factual matters, i.e., as cases where persons give inconsistent verdicts on one and the same truth-evaluable claim or proposition. On that conception, if Jane thinks that meat-eating is morally wrong while Eric denies so then they have incompatible beliefs both of which cannot be true, just as when Jane believes while Eric denies that the Earth is older than four thousand years.