Derek Parfit takes an externalist and cognitivist view about normative reasons. I shall explore this view and add some arguments that support it. But I shall also raise a doubt about it at the end.

When Ingmar and I discuss metaphysics or morality, our views are seldom far apart. Hut on the subjects of this paper, rationality and reasons, we deeply disagree.

Many philosophers claim that it cannot be the case that a person ought to perform an action if this person cannot perform this action. However, most of these philosophers do not give arguments for the truth of this claim. In this paper, I argue that it is plausible to interpret this claim in such a way that it is entailed by the claim that there cannot be a reason for a person to perform an action if it is impossible that (...) this person will perform this action. I then give three arguments for the truth of the latter claim, which are also arguments for the truth of the former claim as I interpret it. (shrink)

When we have a normative reason, and we act for that reason, it becomes our motivating reason. But we can have either kind of reason without having the other. Thus, if I jump into the canal, my motivating reason was provided by my belief; but I had no normative reason to jump. I merely thought I did. And, if I failed to notice that the canal was frozen, I had a reason not to jump that, because it was unknown to (...) me, did not motivate me. Though we can have normative reasons without being motivated, and vice versa, such reasons are closely related to our motivation. There are, however, very different views about what this relation is. This disagreement raises wider questions about what normative reasons are, and about which reasons there are. After sketching some of these views, I shall discuss some arguments by Williams, and then say where, in my opinion, the truth lies. [...] I [will] suggest why, as I believe, we should be non-reductive normative realists, and should regard all reasons as external. (shrink)

Lemmon argues that dilemmas occur between classes of 'oughts;' duties, obligations, and moral principles. He claims that there are not conflicts within each class, presumably because he is a utilitarian, and thinks that moral principles will always be univocal.

I want to look at one aspect of the human good: how it serves as the basis for judgments about the moral right. One important view is that the right is always derived from the good. I want to suggest that the more one understands the nature of the human good, the more reservations one has about that view. I. One Route to Consequentialism Many of us think that different things make a life good, with no one deep value underlying (...) them all. My own list includes: enjoyment, accomplishing something with one's life, deep personal relations, certain sorts of understanding, and the elements of a characteristically human existence. Most of us also think that moral right and wrong are based, in some way or other, in how well individual lives go, and that the moral point of view is, in some sense or other, impartial between lives. Utilitarianism is a prominent, but not the only, way of spelling out this intuition. There is no reason why an account of the human good needs to be confined, in the classical utilitarian way, to happiness or to fulfillment of desire. Nor is there any reason why impartiality has to be confined to maximizing the good, counting everybody for one and nobody for more than one. We may generalize. Let us broaden the notion of the good. We might say, for instance, that though happiness is a good, so are the other items on my list. But though broadened, this notion of the good stays within the confines of individual goods; it still has to do with human well-being, with what promotes the quality of one person's life. (shrink)