Abstract

Epistemologists have long worried that the willingness of open-minded people to reconsider their beliefs in light of new evidence is both a condition of improving their beliefs and a risk factor for losing their grip on what they already know. In this paper I introduce and attempt to resolve a moral variation of this puzzle: A willingness to engage people having strange or (to us) repugnant moral ideals looks like a condition of broadening our moral horizons, but also a risk factor for doing the wrong thing or becoming bad. I pursue a contractualist line according to which such hazardous engagement is a virtue only when it matters to our interlocutors whether they can justify themselves to us on terms we can accept—and for our sake or for the sake of their own virtue, not instrumentally or to get something out of us. When it does not so matter, openness can be unintelligent or gullible, i.e. not virtuous.