 Third, assuming that we’ve got it right, what kind of fact if any makes our thought that the neighbour acted wrongly true? Is the wrongness of the action a projection of our sentiments? If it is a fact, is it like the fact that the square of the hypotenuse is the sum of the squares of the other two sides of a right triangle, or like the fact that water is H2O, or perhaps more like the fact that rotten food is disgusting? For metaphysical sentimentalists, moral facts have to do with our sentimental responses, or moral and evaluative concepts are concepts of properties of causing or warranting sentimental responses. Finally, we’re pretty confident of our judgment. But even if we assume we know all the pertinent empirical facts, how do we know that what the neighbour did is wrong? What if someone disagrees? How can we justify our verdict? Epistemic sentimentalists believe that sentimental responses of a suitable kind play a central role in moral justification or understanding.