 Animalism’s principal rival is not infrequently identified as “neo-Lockeanism”. This way of staging the debate dates back at least as far as a prominent exchange between Noonan (1998, 2001) and D. Mackie (1999a). Also, the first monograph dedicated to animalism mounts a sustained attack on the “psychological approach” to personal identity—an approach whose “best-known advocate … is, of course, Locke” (Olson 1997: 20). And the “animalism vs. neo-Lockeanism” opposition remains common in contemporary discussions (e.g., S. Campbell 2001; Hershenov 2012; Johnston 2010; Robinson 2016; S. Shoemaker 2008).