 Perhaps the most extensive elaboration of the constitutionalist approach has been given by Baker (2000, 2002, 2007). On her view, the property that distinguishes the persons we are from the human animals that constitute us is a form of self-consciousness that she calls the “first-person perspective” (2000: ch. 3). It is from this perspective that “one thinks of oneself as an individual facing a world, as a subject distinct from everything else”; it is what enables us “to conceive of one’s body and mental states as one’s own” (2000: 60, 4). On her view, persons have their first-person perspectives essentially, and they “persist as long as [their] first-person perspectives are exemplified” (2016: 51; see also 2000: 132–41).