First-Personal Moral Testimony: a Defence

Several authors have discussed and defended what is sometimes called the Asymmetry Thesis in social epistemology: that while reliance on testimony is essentially incontrovertible in epistemology, it is uniquely problematic for moral knowledge. This conclusion results, I argue, from considering the wrong sort of moral testimony: namely, ‘third-personal’ rather than ‘first-personal’ testimony. First-personal moral testimony is an inescapable part of the constitution of legitimate moral norms, and its role cannot be deflated as a form of mere information to be taken up in private deliberation. The consequences of this argument for forms of hypothetical contractualism, in particular, are profound.