 On top of this, the relativist about identity thinks that an entity who is of two sorts can persist according to one, while failing to persist according to the other. We might say that from one day to the next, Socrates persists as the same human being, but not as the same body. Thus when Locke says that a person can persist despite a change in substance, or a person can persist despite a change in soul, some scholars take Locke to be showing that he is a relativist about identity. Relative identity readings were rather unpopular for some time, but have experienced a resurgence as of late (see Stuart 2013).