On careful reflection, we might think that the fulfilment of someone’s desire constitutes an addition to that person’s welfare only if that desire has one of a certain set of contents. We might think, for example, that the fulfilment of someone’s desire for pleasure, friendship, knowledge, achievement, or autonomy for herself does constitute an addition to her welfare, and that the fulfilment of any desires she might have for others things do not directly benefit her (though, again, the pleasure she derives from their satisfaction does). If we think this, it seems we think there is a list of things that constitute anyone’s welfare (Parfit 1984: Appendix I; Brink 1989: 221–36; Griffin 1996: ch. 2; Crisp 1997: ch. 3; Gert 1998: 92–4; Arneson 1999a).