  This is a beautifully elegant and straightforward account that makes a valiant attempt to represent moral claims, and indeed evaluative and normative claims more generally, as straightforward matters of natural fact. The main critical concerns that might be raised are liable to echo points already aired. Thus, our earlier remarks about the role of biology might make us suspicious of Thomson’s explication of health, and so of the beneficial, in terms of nature’s designs. And if Thomson’s account of the beneficial is in jeopardy, then so is her account of moral virtue, since moral virtue is largely a matter of acting in ways that are beneficial to oneself and others.