So the first thing to say about ethics is that it is not a set of prohibitions particularly concerned with sex. Even in the era of AIDS, sex raises no unique moral issues at all. Decisions about sex may involve considerations of honesty, concern for others, prudence, and so on, but there is nothing special about sex in this respect, for the same could be said of decisions about driving a car. (In fact, the moral issues raised by driving a car, both from an environmental and from a safety point of view, are much more serious than those raised by sex.) Accordingly, this book contains no discussion of sexual morality. There are more important ethical issues to be considered.