Again from Portraits of American Philosophy, Judith Jarvis Thomson writes:

[W]hich nonphilosophical beliefs are such that a philosopher tries to explain what makes them true?  Moore had invited us to take the beliefs to include that there are living human bodies, which have been in contact with or near the surface of the earth since they were born, that some events had occurred before others, and that there are human beings like oneself in having experiences.  But that is an awfully short list…[T]here is nothing normative on the list, and, in particular, no moral directives to the effect that such and such a person ought or ought not do such and such….It seemed to me clear that there are moral directives that are as obviously true as that there are a lot of living human bodies currently near the surface of the earth.  (pp. 54-55)