Abstract

Has a moral agent really done his duty when he has done what he wronglybelieves to be his duty? Is it right to act in accord with one's beliefs, even when they are mistaken? Or are we always obliged to perform that act which is objectively obligatory? In some such ways as these the problem as to whether one's ‘objective duty’ or one's ‘subjective duty’ is one's real duty has been posed. It might be argued that the objective view is plainly right and that there appears to be a problem only because moral language is here being misused; that the problem is seen to be no problem once we accurately and fully describe acts based on erroneous beliefs. But this is like arguing that there is no problem as to whether the killing of innocent persons is intrinsically wrong, since we can describe each act involving killing in a long-hand way which circumvents the problem concerning the principle.