Abstract: Moral cognition research has in part been taken to be a problem for moral sentimentalists, who claim that emotions are sensitive to moral information. In particular, Joshua Greene can be understood to provide an argument against moral sentimentalism on the basis of neuropsychological evidence. In his argument he claims that emotions are an unreliable source of moral insight. However, the argument boils down to circular claims: (1) Rationalistic factors are assumed to be the only morally relevant factors; (2) Emotions are not sensitive to these factors; (3) Thus, Moral Sentimentalism is false, because only rationalistic factors are justified. While this circularity makes so-called sourcing-arguments fallacious if applied against mo...