 Moral theories also have both substantive and formal aims.  Moral theories try to provide criteria for judging actions. It might be that the criterion is simple, such as right actions maximize the good, or it may be complex, such as the right action is the one that gives adequate weight to each competing duty.  Sometimes, in recognition that there is not always “the” right action, the theory simply provides an account of wrongness, or permissibility and impermissibility, which allows that a range of actions might count as “right”. 