 Having discussed some metaethical theories such as cognitivism and non-cognitivism, we should pause to distinguish claims regarding a priori knowledge or justification of moral evaluations from claims regarding a priori knowledge or justification of meta-ethical propositions, such as that moral statements do not express propositions. Much meta-ethical theorizing is presented as an analysis of moral language, and it seems likely that those involved think of themselves as conducting an a priori inquiry. It would be interesting to devote more specific attention to a priori meta-ethical epistemology, but we are concerned mostly with a priori knowledge or justification of moral propositions.