Economists are deeply suspicious of lexicographic preferences – that is, preferences which are supposed to take absolute precedence over other preferences. “You can’t be serious.” If you have a lexicographic preference for lifespan over other goods, for example, you would have to spend ALL of your time and other resources protecting yourself, and couldn’t take the smallest risk for the largest joy.

But in his new book Ethical Intuitionism, Michael Huemer plausibly argues that everyone ought to have the following lexicographic ordering: (1) morality; (2) prudence; (3) desire. As Huemer explains:

Why does prudence take precedence over desires? Because a prudential judgment, if formed correctly, already takes into account one’s present desires. This judgment is not itself a desire, but it is made in the light of a consideration of what one presently desires and how strong such desires are. If one’s prudential judgment is that one should act in such a way as not to satisfy some present desire, then one has already evaluated some other end as more important than the satisfaction of that desire. To then proceed to weigh the present desire against that judgment would be an unwarranted double-counting of the desire…

[…]

Now why does morality take precedence over self-interest? The answer, I suggest, is structurally the same: because moral judgment, if formed correctly, already takes self-interest into account…

Thus, if one judges that one is morally required to act against one’s own interests on some occasion, that means that one has already weighed one’s particular interest in the circumstances against whatever considerations are at stake, and found one’s own interest to be outweighed by those other considerations. To then proceed to weigh one’s self-interest against that moral judgment would be an unwarranted double-counting of one’s own interest…

I’m convinced.