Abstract

In our thinking about what to do, we consider reasons which count for or against various courses of action. That having a glass of wine with dinner would be pleasant and make me sociable recommends the wine. That it will disturb my sleep and inhibit this evening’s work counts against it. I determine what I ought to do by weighing these considerations and deciding what would be best all things considered. A practical reason makes sense of a course of action by recommending it, by highlighting some good or desirable feature of it which could move a reasonable agent to perform it. When thinking about what to do, we also attend to our obligations. Perhaps I have promised to remain clearheaded this evening. Given this I am obliged not to drink. How should this consideration affect my deliberations? According to Davidson, the fact that an action would be a breach of a promise ‘is a count against the action, to be weighed along with other reasons for the action’ (Davidson 2004: 177). This suggests that obligations are a sub-set of our reasons, they are one input into the process of determining what action would be reasonable or justified all things considered. One can see why Davidson might say this. After all, having carefully considered the matter, I may decide not to keep my promise. Furthermore this may be the right thing to do, the most reasonable course of action available to me in the light of all the relevant factors. Nevertheless this description seems to miss something important about a promise. The fact that I promised not to drink does not merely recommend not drinking as does the prospect of a restless night; it places a demand on me. Drinking would not be just inadvisable; it would now be a wrong. And even if such a wrong might on the whole be justified, even if committing this wrong is the right thing to do, in drinking I refuse a demand, I don’t just reject a recommendation. It is widely held that a promise provides you with a moral reason to fulfill it, whereas the fact that drinking would make you lose sleep does not, typically, constitute such a reason..