Though an "is" alone won't give support
To a value, a norm, or an "ought",
If you mix on the fire
Both belief and desire,
You get thought of an "ought" of a sort.
I hope that any students who have been taught meta-ethics by me enjoy the above. It was actually inspired by a conference on norms and analysis (and specifically the relationship between naturalism and normativity) that I had to miss a couple of weeks ago.